SARA-G340-00S

SARA-G3 series GSM/GPRS modules Data Sheet Abstract Technical data sheet describing SARA-G3 series GSM/GPRS cellular modules. These modules are complete and cost efficient solutions offering two-band or quad-band GSM/GPRS voice and/or data transmission technology in a compact form factor. www.u-blox.com UBX-13000993 - R19 SARA-G3 series - Data Sheet Document Information Title SARA-G3 series Subtitle GSM/GPRS modules Document type Data Sheet Document number UBX-13000993 Revision and date R19 24-Apr-2017 Disclosure restriction Product Status Corresponding content status Functional Sample Draft For functional testing. Revised and supplementary data will be published later. In Development / Prototype Objective Specification Target values. Revised and supplementary data will be published later. Engineering Sample Advance Information Data based on early testing. Revised and supplementary data will be published later. Initial Production Early Prod. Information Data from product verification. Revised and supplementary data may be published later. Mass Production / End of Life Production Information Final product specification. This document applies to the following products: Product name Type number Modem version Application version PCN reference Product status SARA-G300 SARA-G300-00S-01 08.58 A01.01 UBX-16010060 Mass Production SARA-G310 SARA-G310-00S-01 08.58 A01.01 UBX-16010060 Mass Production SARA-G340 SARA-G340-00S-00 08.49 N.A. UBX-14000382 Mass Production SARA-G340-01S-00 08.70 A00.02 UBX-14039634 Mass Production SARA-G340-02S-00 08.90 A00.02 UBX-16001074 Mass Production SARA-G340 ATEX SARA-G340-02X-00 08.90 A00.02 UBX-16017766 Mass Production SARA-G350 SARA-G350-00S-00 08.49 N.A. GSM.G2-TN-13002 Mass Production SARA-G350-01S-00 08.70 A00.02 UBX-14039634 Mass Production SARA-G350-01B-00 08.70 A00.02 UBX-14039634 Mass Production SARA-G350-02S-00 08.90 A00.02 UBX-16001074 Mass Production SARA-G350-00X-00 08.49 N.A. GSM.G2-TN-13002 Mass Production SARA-G350 ATEX u-blox reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this document or any part thereof without the express permission of u-blox is strictly prohibited. The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information. This document may be revised by u-blox at any time. For most recent documents, please visit www.u-blox.com. Copyright © 2017, u-blox AG u-blox® is a registered trademark of u-blox Holding AG in the EU and other countries. Trademark Notice Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. All other registered trademarks or trademarks mentioned in this document are property of their respective owners. UBX-13000993 - R19 Page 2 of 47 SARA-G3 series - Data Sheet Contents Contents.............................................................................................................................. 3 1 Functional description.................................................................................................. 5 1.1 1.2 1.3 1.4 1.5 1.6 2 Overview .............................................................................................................................................. 5 Product features ................................................................................................................................... 5 Block diagram....................................................................................................................................... 6 Product description ............................................................................................................................... 7 AT command support ........................................................................................................................... 8 Supported features ............................................................................................................................... 8 Interfaces .................................................................................................................... 11 2.1 Power management ........................................................................................................................... 11 2.1.1 Module supply input (VCC) ......................................................................................................... 11 2.1.2 RTC supply input/output (V_BCKP) .............................................................................................. 11 2.1.3 Digital I/O interfaces supply output (V_INT).................................................................................. 11 2.2 Antenna ............................................................................................................................................. 11 2.2.1 Antenna RF interface (ANT) ......................................................................................................... 11 2.2.2 Antenna detection (ANT_DET) ..................................................................................................... 11 2.3 System functions ................................................................................................................................ 12 2.3.1 Module power-on (PWR_ON) ...................................................................................................... 12 2.3.2 Module power-off ....................................................................................................................... 12 2.3.3 Module reset (RESET_N) .............................................................................................................. 12 2.3.4 External 32 kHz signal input (EXT32K) ......................................................................................... 12 2.3.5 Internal 32 kHz signal output (32K_OUT) .................................................................................... 12 2.4 SIM..................................................................................................................................................... 13 2.4.1 (U)SIM interface .......................................................................................................................... 13 2.4.2 SIM card detection (SIM_DET)...................................................................................................... 13 2.5 Serial interfaces .................................................................................................................................. 13 2.5.1 Asynchronous serial interface (UART) .......................................................................................... 14 2.5.2 Auxiliary asynchronous serial interface (AUX UART) ..................................................................... 15 2.5.3 DDC (I2C compatible) interface .................................................................................................... 15 2.6 Audio ................................................................................................................................................. 16 2.7 GPIO................................................................................................................................................... 16 3 Pin definition .............................................................................................................. 17 3.1 4 Pin assignment ................................................................................................................................... 17 Electrical specifications .............................................................................................. 22 4.1 Absolute maximum rating .................................................................................................................. 22 4.1.1 Maximum ESD ............................................................................................................................. 22 4.2 Operating conditions .......................................................................................................................... 23 4.2.1 Operating temperature range ...................................................................................................... 23 UBX-13000993 - R19 Contents Page 3 of 47 SARA-G3 series - Data Sheet 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 4.2.8 4.2.9 4.2.10 4.2.11 4.2.12 4.2.13 Module thermal resistance .......................................................................................................... 23 Supply/Power pins ....................................................................................................................... 24 Current consumption .................................................................................................................. 25 RF performance ........................................................................................................................... 26 ANT_DET pin ............................................................................................................................... 26 PWR_ON pin ............................................................................................................................... 27 RESET_N pin ................................................................................................................................ 27 EXT32K pin ................................................................................................................................. 27 SIM pins ...................................................................................................................................... 28 Generic Digital Interfaces pins ..................................................................................................... 28 DDC (I2C) pins ............................................................................................................................. 31 Audio pins ................................................................................................................................... 31 5 Mechanical specifications .......................................................................................... 32 6 Qualification and approvals ...................................................................................... 33 6.1 Reliability tests .................................................................................................................................... 33 6.2 Approvals ........................................................................................................................................... 33 6.2.1 SARA-G3 series ........................................................................................................................... 33 6.2.2 SARA-G340 ATEX and SARA-G350 ATEX .................................................................................... 34 7 Product handling ........................................................................................................ 36 7.1 Packaging ........................................................................................................................................... 36 7.1.1 Reels ........................................................................................................................................... 36 7.1.2 Tapes .......................................................................................................................................... 37 7.2 Moisture sensitivity levels .................................................................................................................... 37 7.3 Reflow soldering ................................................................................................................................. 38 7.4 ESD precautions.................................................................................................................................. 38 8 9 Default settings .......................................................................................................... 39 Labeling and ordering information........................................................................... 40 9.1 9.2 9.3 Product labeling.................................................................................................................................. 40 Explanation of codes .......................................................................................................................... 42 Ordering information .......................................................................................................................... 43 Appendix .......................................................................................................................... 44 A Glossary ...................................................................................................................... 44 Related documents .......................................................................................................... 45 Revision history ................................................................................................................ 46 Contact .............................................................................................................................. 47 UBX-13000993 - R19 Contents Page 4 of 47 SARA-G3 series - Data Sheet 1 Functional description 1.1 Overview SARA-G3 series modules are versatile 2.5G GSM/GPRS cellular modules in a miniature LGA (Land Grid Array) form factor. Featuring low power consumption, the SARA-G3 series combines baseband, RF transceiver, power management unit, and power amplifier in a single, easy-to-integrate solution. SARA-G3 modules provide a fully qualified and certified solution, reducing cost and enabling short time to market. These modules are ideally suited for M2M applications such as: Automatic Meter Reading (AMR), Remote Monitoring Automation and Control (RMAC), surveillance and security, eCall, road pricing, asset tracking, fleet management, anti theft systems and Point of Sales (PoS) terminals. SARA-G340 (dual-band) and SARA-G350 (quad-band) are full feature GSM/GPRS cellular modules with a comprehensive feature set including an extensive set of internet protocols. The modules also provide fully integrated access to u-blox GNSS positioning chips and modules, with embedded A-GPS (AssistNow Online and AssistNow Offline) functionality. Any host processor connected to the cellular module through a single serial port can control both the cellular module and the positioning chip / module. SARA-G310 (quad-band) and SARA-G300 (dual-band) are GSM/GPRS cellular modules targeted for high volume cost-sensitive applications, providing GSM/GPRS functionalities with a reduced set of additional features to minimize the customer’s total cost of ownership. The SARA-G3 series’ compact form factor and LGA pads allow fully automated assembly with standard pick & place and reflow soldering equipment for cost-efficient, highvolume production. SARA-G300 • SARA-G310 • SARA-G340 • • • • • 2 4 • • • • • • • • ○ □ • • • SARA-G340 ATEX • • • • • 2 4 • • • • • • • • ○ □ • • • SARA-G350 • • • • • 2 4 • • • • • • • • ○ □ • • • SARA-G350 ATEX • • • • • 2 4 • • • • • • • • □ • • • • • 2 • ■ 2 • ■ ● = supported by all product versions ○ = supported by product versions “01” onwards Table 1: SARA-G3 series – summary of modules’ main features Standard Professional Automotive ATEX certification Low power idle-mode eCall / ERA-GLONASS Grade FW update via serial interface Dual stack IPv4/IPv6 Embedded SSL Embedded FTP, HTTP, SMTP Embedded TCP/UDP stack Jamming detection Features Antenna supervisor Audio Network indication Interfaces Analog Audio Digital Audio CellLocate® AssistNow Software GNSS via modem Positioning GNSS receiver GSM/GPRS 2-band 900/1800 Data Bands Rate GPRS multi-slot class 10 Module UART SPI USB 2.0 GPIO DDC for u-blox GNSS receivers Product features GSM/GPRS 4-band 1.2 • • ■ = 32 kHz signal at EXT32K input is required for low power idle-mode □ = supported by product versions “02” onwards 1 1 SARA-G340 ATEX and SARA-G350 ATEX modules provide the same feature set as the SARA-G340 and SARA-G350 modules respectively, with the additional certification for use in potentially explosive atmospheres. Unless otherwise specified, SARA-G340 refers to all SARA-G340 ATEX and SARA-G340 modules; in the same way SARA-G350 refers to both SARA-G350 ATEX and SARA-G350 modules. UBX-13000993 - R19 Functional description Page 5 of 47 SARA-G3 series - Data Sheet 1.3 Block diagram 26 MHz 32 kHz 32 kHz PA ANT Power-On SAW Filter Switch RF Transceiver Reset SIM card UART Memory Auxiliary UART Baseband VCC (Supply) V_BCKP (RTC) Power Management V_INT (I/O) Figure 1: SARA-G300 and SARA-G310 block diagram 32.768 kHz 26 MHz PA ANT Power-On SAW Filter Switch RF Transceiver Reset SIM card SIM card detection UART Memory Auxiliary UART Baseband VCC (Supply) V_BCKP (RTC) DDC (for GPS/GNSS) Analog Audio Power Management V_INT (I/O) Digital Audio GPIO Antenna detection Figure 2: SARA-G340 and SARA-G350 block diagram UBX-13000993 - R19 Functional description Page 6 of 47 SARA-G3 series - Data Sheet 1.4 Product description Item SARA-G300 SARA-G310 SARA-G340 SARA-G350 GSM/GPRS Protocol Stack 3GPP Release 99 3GPP Release 99 3GPP Release 99 3GPP Release 99 Mobile Station Class Class B Class B GSM/GPRS Bands E-GSM 900 MHz DCS 1800 MHz GSM 850 MHz E-GSM 900 MHz DCS 1800 MHz PCS 1900 MHz E-GSM 900 MHz DCS 1800 MHz GSM 850 MHz E-GSM 900 MHz DCS 1800 MHz PCS 1900 MHz GSM/GPRS Power Class Class 4 (33 dBm) for 900 band Class 1 (30 dBm) for 1800 band Class 4 (33 dBm) for 850/900 bands Class 1 (30 dBm) for 1800/1900 bands Class 4 (33 dBm) for 900 band Class 1 (30 dBm) for 1800 band Class 4 (33 dBm) for 850/900 bands Class 1 (30 dBm) for 1800/1900 bands Packet Switched Data Rate GPRS multi-slot class 10 Coding scheme CS1-CS4 4 Up to 85.6 kb/s DL 4 Up to 42.8 kb/s UL Circuit Switched Data Rate Up to 9.6 kb/s DL/UL Transparent mode Non-transparent mode Up to 9.6 kb/s DL/UL Transparent mode Non-transparent mode Up to 9.6 kb/s DL/UL Transparent mode Non-transparent mode Up to 9.6 kb/s DL/UL Transparent mode Non-transparent mode Network Operation Modes I to III I to III I to III I to III 2 3 2 Class B 3 Class B 3 GPRS multi-slot class 10 Coding scheme CS1-CS4 4 Up to 85.6 kb/s DL 4 Up to 42.8 kb/s UL 4 2 GPRS multi-slot class 10 Coding scheme CS1-CS4 4 Up to 85.6 kb/s DL 4 Up to 42.8 kb/s UL 4 4 2 3 GPRS multi-slot class 10 Coding scheme CS1-CS4 4 Up to 85.6 kb/s DL 4 Up to 42.8 kb/s UL 4 Table 2: SARA-G3 series GSM/GPRS characteristics summary The network automatically configures the channel encoding used by the module, depending on conditions and the quality of the radio link between cell phone and base station. If the channel is very noisy, the network may use the most robust coding scheme (CS-1) to ensure higher reliability. If the channel provides good conditions, the network can use the least robust but fastest coding scheme (CS-4) to obtain optimum speed. Basic features Supplementary services Display of Called Number 5 Call Hold/Resume (HOLD) Indication of Call Progress Signals 5 Short Message Service (SMS) 5 Text and PDU mode supported 5 Call Waiting (CW) Mobile-Originating SMS (MO SMS) 5 Country/PLMN Indication Call Forwarding (CFU, CFB, CFNRy, CFNRc) Country/PLMN Selection Call Barring (BAOC, BOIC, BOIC-exHC, BAIC, BIC_Roam) International Access Function 5 Call Deflection (CD) Service Indicator 5 Explicit Call Transfer (ECT) Emergency Calls Capabilities 5 Dual Tone Multi Frequency (DTMF) Multi-Party (MTPY) 5 Mobile-Terminating SMS (MT SMS) SMS during circuit-switched calls 5 5 SMS over PSD 5 Service Provider Indication Connected Line Identification Presentation (CoLP) Fixed Number Dialing Connected Line Identification Restriction (CoLR) 5 ME-SIM lock SMS storage on SIM 5 5 SMS storage on module memory 5 Concatenated SMS Unstructured Supplementary Services Data (USSD) Barring of Dialed Numbers SIM Application Toolkit 5 SMS over CSD Calling Line Identification Presentation (CLIP) Calling Line Identification Restriction (CLIR) Abbreviated Dialing SMS indication and acknowledgement SMS Cell Broadcast (CBS) 5 Subscription Identity Management 5 5 5 5 Advice of Charge Charging (AoCC, AoCI) Calling Name Presentation (CNAP) 5 5 Network Identify and Time Zone (NITZ) Table 3: SARA-G3 series mobile stations: basic features, supplementary services, and SMS service summary 6 2 Device can be attached to both GPRS and GSM services (i.e. Packet Switch and Circuit Switch mode) using one service at a time. GPRS multi-slot class 10 implies a maximum of 4 slots in DL (reception) and 2 slots in UL (transmission) with 5 slots in total. The maximum bit rate of the module depends on the current network settings. 5 Supported only by SARA-G340 and SARA-G350 modules 6 These functionalities are supported via AT commands (for more details see the u-blox AT Commands Manual [1]). 3 4 UBX-13000993 - R19 Functional description Page 7 of 47 SARA-G3 series - Data Sheet 1.5 AT command support The module supports AT commands according to 3GPP standards: TS 27.007 [9], 27.005 [10], 27.010 [11], and the u-blox AT command extension. For the complete list of the supported AT commands and their syntax, see the document u-blox AT Commands Manual [1]. RIL (Radio Interface Layer) software for Android and Embedded Windows is available for SARA-G3 modules free of charge; see the Android RIL Production delivery [6] and the Windows Embedded RIL Production delivery [7] application notes for more information. 1.6 Supported features Table 4 describes the main features supported by SARA-G3 modules. For more details, see the SARA-G3 / SARA-U2 Series System Integration Manual [2] and u-blox AT commands manual [1]. Feature Module Description Network Indication SARA-G340 / SARA-G350 GPIO configured to indicate the network status: registered home network, registered roaming, voice or data call enabled, no service. The network indication feature can be enabled through a custom AT command (see the u-blox AT commands manual [1], +UGPIOC AT command). Antenna Detection SARA-G340 / SARA-G350 The ANT_DET pin provides antenna presence detection capability, evaluating the resistance from the ANT pin to GND by means of an external antenna detection circuit implemented on the application board. The antenna detection feature can be enabled through a custom AT command (see the u-blox AT commands manual [1], +UANTR AT command). Jamming detection SARA-G340 / SARA-G350 Detects “artificial” interference that obscures the operator’s carriers providing access to the GSM service and reports the start and stop of such conditions to the application processor (AP). The AP can react appropriately, e.g. by switching off the radio transceiver to reduce power consumption and monitoring the environment at constant periods. The jamming detection feature can be enabled and configured through a custom AT command (see the u-blox AT commands manual [1], +UCD AT command). Jamming condition 7 indication over GPIO SARA-G340 / SARA-G350 The jamming condition can be reported by a GPIO of the module as enabled and configured through a custom AT commands (see the u-blox AT commands manual [1], +UCD and +UGPIOC AT commands). SARA-G340 / SARA-G350 AT command mode available on both the UART and the Auxiliary UART interfaces. See the u-blox AT Commands Manual [1], +USIO AT command for further details regarding serial interfaces configuration selection. SARA-G340 / SARA-G350 Embedded TCP/IP and UDP/IP stack including direct link mode for TCP and UDP sockets. The sockets can be configured in Direct Link mode to establish a transparent end-to-end communication with an already connected TCP or UDP socket via serial interface. SARA-G340 / SARA-G350 File Transfer Protocol as well as Secure File Transfer Protocol (SSL encryption of FTP control channel) functionalities are supported via AT commands. SARA-G340 / SARA-G350 Hyper-Text Transfer Protocol as well as Secure Hyper-Text Transfer Protocol (SSL encryption) functionalities are supported via AT commands. HEAD, GET, POST, DELETE and PUT operations are available. Up to 4 client contexts can be simultaneously used. Second AT interface 7 Embedded TCP/IP and UDP/IP 8 FTP, FTPS HTTP, HTTPS 7 8 8 Supported by “02” product versions onwards FTPS and HTTPS supported by “01” product versions onwards UBX-13000993 - R19 Functional description Page 8 of 47 SARA-G3 series - Data Sheet Feature Module Description SARA-G340 / SARA-G350 With the support of X.509 certificates, Embedded TLS 1.2 provides server and client authentication, data encryption, data signature and enables TCP/IP applications like HTTPS and FTPS to communicate over a secured and trusted connection. The feature can be configured and enabled by +USECMNG and +USECPRF AT commands. SARA-G340 / SARA-G350 Capability to move between IPv4 and dual stack network infrastructures. IPv4 and IPv6 addresses can be used. GPS/GNSS via Modem SARA-G340 / SARA-G350 Full access to u-blox positioning chips and modules is available through a dedicated DDC 2 (I C) interface. A single serial port from any host processor can control both the cellular module and the positioning chips / modules. For more details see the GNSS Implementation Application Note [3]. AssistNow Software SARA-G340 / SARA-G350 Embedded AssistNow Online and AssistNow Offline clients to provide full developed to provide better GNSS performance and faster Time-to-First-Fix. The clients can be enabled / disabled with an AT command. CellLocate SARA-G340 / SARA-G350 Enables the estimation of device position based on the parameters of the mobile network ® cells visible to the specific device based on the CellLocate database:  Normal scan: parameters of the visible home network cells are only sent  Deep scan: parameters of all surrounding cells of all mobile operators are sent ® ® CellLocate is implemented using a set of AT commands for CellLocate service configuration and position request. Hybrid Positioning SARA-G340 / SARA-G350 Provides the module’s current position using a u-blox positioning chip or module or the ® estimated position from CellLocate , depending on which positioning method provides the best and fastest solution according to the user configuration. Hybrid positioning is implemented through a set of AT commands that allow the configuration and the position request. Firmware update Over AT commands (FOAT) All Firmware module upgrade over the UART interface using AT command. SARA-G340 / SARA-G350 Bearer Independent Protocol for Over-the-Air SIM provisioning. The data transfer to/from the SIM uses either an already active PDP context or a new PDP context established with the APN provided by the SIM card. In-Band modem SARA-G340 / SARA-G350 In-Band modem solution for eCall and ERA-GLONASS emergency call applications over cellular networks implemented according to the 3GPP TS 26.267 specification [12]. When activated, the in-vehicle eCall / ERA-GLONASS system (IVS) creates an emergency call carrying both voice and data (including vehicle position data) directly to the nearest Public Safety Answering Point (PSAP) to determine whether rescue services should be dispatched to the known position. DTMF decoder SARA-G340 / SARA-G350 During a voice call, the Dual-Tone Multi-Frequency detector analyses the RX speech (coming from remote party). The detected DTMF symbols can be output via related URC. For more details, see the +UDTMFD AT command. Automatic selection of 9 authentication type SARA-G340 / SARA-G350 Automatic selection of authentication type during PDP context activation. The module will sequentially try different authentication protocols (none/CHAP/PAP) until the authentication succeeds. The feature can be enabled through the +UPSD and +UAUTHREQ AT commands. Signal quality report 9 for PS calls SARA-G340 / SARA-G350 The quality of the GPRS UL and/or DL connection is returned by the AT+CSQ command. Network Friendly 9 Mode SARA-G340 / SARA-G350 When the Network Friendly Mode is enabled, the module reacts to service request denials by using time-spaced, randomized or delayed retry schemes according to GSMA IoT Device Connection Efficiency Guidelines [13]. The feature can be enabled through the +UNFM, +UNFMCONF, +URPM AT commands. Embedded TLS 1.2 7 IPv4/IPv6 dual-stack 9 ® BIP 9 9 Supported by “02” product versions onwards UBX-13000993 - R19 Functional description Page 9 of 47 SARA-G3 series - Data Sheet Feature Module Description Smart Temperature Supervisor SARA-G340 / SARA-G350 Constant monitoring of the module board temperature:  Warning notification when the temperature approaches an upper or lower predefined threshold  Shutdown notified and forced when the temperature value is outside the specified range (shutdown suspended in case of an emergency call in progress) The Smart Temperature Supervisor feature can be enabled or disabled through an AT command (see the u-blox AT commands manual [1], +USTS AT command) The sensor measures board temperature inside the shields, which can differ from ambient temperature. Power saving All The power saving configuration is by default disabled, but it can be configured using an AT command. When power saving is enabled, the module automatically enters the low power idle-mode whenever possible, reducing current consumption. During idle-mode, the module processor core runs with the RTC 32 kHz reference clock, which is generated by:  The internal 32 kHz oscillator, in case of SARA-G340 and SARA-G350 modules  The 32 kHz signal provided at the EXT32K input pin, in case of SARA-G300 and SARA-G310 modules For more details, see the SARA-G3 / SARA-U2 Series System Integration Manual [2] and the u-blox AT commands manual [1], +UPSV AT command. Table 4: SARA-G3 series’ main supported features u-blox is extremely mindful of user privacy. When a position is sent to the CellLocate® server, u-blox is unable to track the SIM used or the specific device. UBX-13000993 - R19 Functional description Page 10 of 47 SARA-G3 series - Data Sheet 2 Interfaces 2.1 Power management 2.1.1 Module supply input (VCC) SARA-G3 modules must be supplied through the three VCC pins by a DC power supply. Voltages must be stable: during operation, the current drawn from VCC can vary by some order of magnitude, especially due to the surging consumption profile of the GSM system (described in the SARA-G3 / SARA-U2 Series System Integration Manual [2]). It is important that the system power supply circuit is able to support peak power. SARA-G3 modules product versions “02” onwards provide separate supply inputs over the three VCC pins:  VCC pins #52 and #53 represent the supply input for the internal RF power amplifier, demanding most of the total current drawn of the module when RF transmission is enabled during a voice/data call  VCC pin #51 represents the supply input for the internal baseband Power Management Unit and the internal transceiver, demanding minor part of the total current drawn of the module when RF transmission is enabled during a voice/data call 2.1.2 RTC supply input/output (V_BCKP) V_BCKP is the Real Time Clock (RTC) supply of SARA-G3 modules. When VCC voltage is within the valid operating range, the internal Power Management Unit (PMU) supplies the RTC and the same supply voltage is available on V_BCKP pin. If the VCC voltage is under the minimum operating limit (e.g. during not powered mode), the V_BCKP pin can externally supply the RTC. 2.1.3 Digital I/O interfaces supply output (V_INT) SARA-G3 modules provide an internally generated supply rail output for digital interfaces (V_INT). This can be used in place of an external discrete regulator to supply pull-up resistors on the DDC interface. This optimizes the bill of material for various applications, e.g. with u-blox positioning modules operating at 1.8 V. 2.2 Antenna 2.2.1 Antenna RF interface (ANT) The ANT pin has an impedance of 50  and provides the RF antenna interface of SARA-G3 modules. 2.2.2 Antenna detection (ANT_DET) The ANT_DET pin is an Analog to Digital Converter (ADC) input provided only by SARA-G340 and SARA-G350 modules to sense the antenna presence (as optional feature), evaluating the resistance from the ANT pin to GND by means of an external antenna detection circuit implemented on the application board. (For more details, see SARA-G3 / SARA-U2 Series System Integration Manual [2] and u-blox AT Commands Manual [1], +UANTR.) UBX-13000993 - R19 Interfaces Page 11 of 47 SARA-G3 series - Data Sheet 2.3 System functions 2.3.1 Module power-on (PWR_ON) SARA-G3 modules can be switched on in one of the following ways:  Rising edge on the VCC pin to a valid voltage for module supply, i.e. applying module supply  Low level on the PWR_ON input pin, i.e. forcing the pin (normally high with external pull-up) to a low level for a valid time period (see section 4.2.7). The PWR_ON pin requires an external pull-up resistor to set its value to logic high and may not be left floating  RTC alarm, i.e. pre-programmed scheduled time (see the u-blox AT Commands Manual [1], AT+CALA) SARA-G300 and SARA-G310 cannot be switched on with RTC alarm. 2.3.2 Module power-off SARA-G3 modules can be properly switched off, with storage of current settings and network detach, by:  AT+CPWROFF command An abrupt under-voltage shutdown occurs on SARA-G3 modules when the VCC supply drops below the extended operating range minimum limit, but in this case it is not possible to perform the storing of the current parameter settings in the module’s non-volatile memory as well as the proper network detach. An over-temperature or an under-temperature shutdown occurs on SARA-G3 modules when the temperature measured within the cellular module reaches the dangerous area, if the optional Smart Temperature Supervisor feature is enabled and configured by the dedicated AT command. For more details see the SARA-G3 / SARA-U2 Series System Integration Manual [2] and u-blox AT commands manual [1], +USTS AT command. 2.3.3 Module reset (RESET_N) SARA-G3 modules can be properly reset (rebooted), with storage of current parameter settings in the module’s non-volatile memory and proper network detach, in this way:  AT+CFUN command (see the u-blox AT Commands Manual [1]). This causes an “internal” or “software” reset of the module. An abrupt “external” or “hardware” reset occurs when a low level is applied to the RESET_N pin, which is normally set high by an internal pull-up, for a valid time period (see section 4.2.8), but in this case it is not possible to perform the storing of the current parameter settings as well as the proper network detach. 2.3.4 External 32 kHz signal input (EXT32K) SARA-G300 and SARA-G310 provide the EXT32K input pin that must be fed by a proper 32 kHz signal to furnish the reference clock for the RTC, allowing very low power idle-mode and RTC functions support. (See section 4.2.9 for detailed electrical specifications for the 32 kHz signal.) SARA-G340 and SARA-G350 do not provide the EXT32K input pin. An internal 32 kHz oscillator automatically generates the reference clock for the RTC, allowing very low power idle-mode and RTC functions support. 2.3.5 Internal 32 kHz signal output (32K_OUT) SARA-G300 and SARA-G310 provide the 32K_OUT output pin which gives a 32 kHz reference signal suitable only to feed the EXT32K input pin of SARA-G300 / SARA-G310 modules, furnishing the reference clock for the RTC, allowing low power idle-mode and RTC functions support with modules switched on. SARA-G340 and SARA-G350 do not provide the 32K_OUT output; there is no EXT32K input on these modules. UBX-13000993 - R19 Interfaces Page 12 of 47 SARA-G3 series - Data Sheet 2.4 SIM 2.4.1 (U)SIM interface A (U)SIM card interface is available via the VSIM, SIM_IO, SIM_CLK, SIM_RST pins of SARA-G3 series modules: the high-speed SIM/ME interface is implemented as well as the automatic detection of the required SIM supporting voltage. Both 1.8 V and 3 V SIM types are supported: activation and deactivation with automatic voltage switch from 1.8 V to 3 V are implemented, according to ISO-IEC 7816-3 Specifications. The SIM driver supports the PPS procedure for baud-rate selection, according to the values proposed by the SIM Card. 2.4.2 SIM card detection (SIM_DET) Not supported by SARA-G300-00S and SARA-G310-00S modules. The SIM_DET pin of SARA-G3 modules is a digital input provided to sense the SIM card presence (as an optional feature), when it is properly connected to the mechanical switch of the SIM card holder (for more details see the SARA-G3 / SARA-U2 Series System Integration Manual [2]). 2.5 Serial interfaces SARA-G3 modules provide the following serial communication interfaces:  UART interface: 9-wire unbalanced 1.8 V asynchronous serial interface supporting  AT command mode  Data mode and Online command mode10  MUX functionality, including dedicated GNSS tunneling virtual channel11  FW upgrades by means of the FOAT feature  Auxiliary UART interface: 3-wire unbalanced 1.8 V asynchronous serial interface supporting  AT command mode12  GNSS tunneling12  FW upgrades by means of the u-blox EasyFlash tool  Trace log capture (diagnostic purpose)  DDC interface13: I2C-bus compatible interface supporting  Communication with u-blox GPS/GNSS positioning chips / modules 10 See the u-blox AT Commands Manual [1] for the definition of the interface data mode and online command mode. GNSS tunneling is not supported by SARA-G300 and SARA-G310 modules. 12 AT command mode and GNSS tunneling are not supported over the Auxiliary UART of SARA-G3 modules product versions “00” and “01”. 13 2 DDC I C-bus compatible interface is not supported by SARA-G300 and SARA-G310 modules. 11 UBX-13000993 - R19 Interfaces Page 13 of 47 SARA-G3 series - Data Sheet 2.5.1 Asynchronous serial interface (UART) The UART interface is a 9-wire unbalanced 1.8 V asynchronous serial interface provided on all SARA-G3 modules for communication with an application processor, supporting:  AT command mode  Data mode and Online command mode14  MUX functionality, including dedicated GNSS tunneling virtual channel15  FW upgrades by means of the FOAT feature UART characteristics are:  Complete serial port with RS-232 functionality conforming to the ITU-T V.24 Recommendation [8], with CMOS compatible signal levels (0 V for low data bit or ON state and 1.8 V for high data bit or OFF state)  Data lines (RXD as output, TXD as input), hardware flow control lines (CTS as output, RTS as input), modem status and control lines (DTR as input, DSR as output, DCD as output, RI as output) are provided  Hardware flow control (default value), software flow control, or none flow control are supported  Power saving indication available on the hardware flow control output (CTS line): the line is driven to the OFF state when the module is not ready to accept data signals  2400, 4800, 9600, 19200, 38400, 57600, 115200 b/s baud rates are supported  Auto baud rate detection (autobauding) is the default configuration  Frame format can be: 8N1 (8 data bits, No parity, 1 stop bit), or 8N2 (8 data bits, No parity, 2 stop bits), or 8E1 (8 data bits, even parity, 1 stop bit), or 8O1 (8 data bits, odd parity, 1 stop bit), or 7E1 (7 data bits, even parity, 1 stop bit), or 7O1 (7 data bits, odd parity, 1 stop bit)  Automatic frame recognition is supported: this feature is the default configuration and it is enabled in conjunction with the auto baud rate detection only  Default frame configuration with fixed baud is 8N1 (8 data bits, No parity, 1 stop bit), 2.5.1.1 Multiplexer protocol SARA-G3 module has a software layer with MUX functionality, 3GPP TS 27.010 [11], available on the UART physical link. This is a data link protocol (layer 2 of OSI model) which uses HDLC-like framing and operates between the module (DCE) and the application processor (DTE), and allows a number of simultaneous sessions over the physical link (UART): the user can concurrently use AT command interface on one MUX channel and data communication on another MUX channel. SARA-G340 and SARA-G350 modules define the following virtual channels:  Channel 0: control channel  Channel 1 – 5: AT commands / data connection  Channel 6: GNSS tunneling SARA-G300 and SARA-G310 modules define the following virtual channels:  Channel 0: control channel  Channel 1 – 2: AT commands / data connection For more details, see the Mux Implementation Application Note [4]. 14 15 See the u-blox AT Commands Manual [1] for the definition of the interface data mode and online command mode. GNSS tunneling is not supported by SARA-G300 and SARA-G310 modules. UBX-13000993 - R19 Interfaces Page 14 of 47 SARA-G3 series - Data Sheet 2.5.2 Auxiliary asynchronous serial interface (AUX UART) The auxiliary UART interface is a 3-wire unbalanced 1.8 V asynchronous serial interface available on all SARA-G3 modules, supporting16  AT command mode17  GNSS tunneling mode17  FW upgrades by means of the u-blox EasyFlash tool  Trace log capture (diagnostic purpose) Auxiliary UART characteristics are:  Only the RXD_AUX data output and the TXD_AUX data input are provided, with CMOS compatible signal levels (0 V for low data bit or ON state and 1.8 V for high data bit or OFF state)  Characteristics in AT command mode17:  Baud rate can be: 2400, 4800, 9600, 19200, 38400, 57600, 115200 b/s, with default value 115200 b/s  Frame format can be: 8N1, or 8N2, or 8E1, or 8O1, or 7E1, or 7O1, with default value 8N1  Automatic baud rate detection (autobauding) and automatic frame recognition are not supported  Software flow control, or None flow control (default value) are supported  Characteristics in GNSS tunneling mode17:  Baud rate is 115200 b/s  Frame format is 8N1 (8 data bits, No parity, 1 stop bit)  None flow control is supported  Characteristics for FW upgrade and diagnostic trace modes:  115200, 230400, 460800, 921600 b/s baud rates are supported  Frame format is 8N1 (8 data bits, No parity, 1 stop bit)  None flow control is supported 2.5.3 DDC (I2C compatible) interface SARA-G340 and SARA-G350 modules provide an I2C compatible DDC interface on the SCL and SDA pins exclusively for the communication with u-blox GNSS positioning chips / modules. 16 17 See the u-blox AT Commands Manual [1], +USIO AT command for further details regarding serial interfaces configuration selection. AT command mode and GNSS tunneling are not supported over the Auxiliary UART of SARA-G3 modules product versions “00” and “01”. UBX-13000993 - R19 Interfaces Page 15 of 47 SARA-G3 series - Data Sheet 2.6 Audio SARA-G340 and SARA-G350 modules provide analog and digital audio interfaces:  Analog audio input:  Differential analog audio input (MIC_P, MIC_N) shared for all the analog audio path modes: the pins can be connected to the output of an external analog audio device or can be connected to an external microphone by means of a simple circuit implemented on the application board  Supply output for an external microphone (MIC_BIAS): the pin can provide the bias to an external microphone by means of a simple circuit implemented on the application board  Local ground for the external microphone (MIC_GND): the pin can provide the reference for the differential analog audio input as sense ground line for the external microphone circuit  Analog audio output:  Differential audio output (SPK_P, SPK_N) shared for all the analog audio path modes: the pins can be connected to the input of an external analog audio device or can be connected to an external speaker  I2S digital audio interface:  4-wire digital audio interface (I2S_TXD, I2S_RXD, I2S_CLK, I2S_WA) that can be configured by AT command in PCM or in normal I2S mode For more details regarding audio interfaces configuration and usage see the u-blox AT Commands Manual [1] and the SARA-G3 / SARA-U2 Series System Integration Manual [2]. 2.7 GPIO SARA-G340 and SARA-G350 modules provide 4 GPIO pins (GPIO1-GPIO4) that can be configured for general purpose input/output, or to provide custom functions via u-blox AT commands (for further details, see the SARA-G3 / SARA-U2 Series System Integration Manual [2] and to u-blox AT Commands Manual [1], +UGPIOC, +UGPIOR, +UGPIOW, +UGPS, +UGPRF). Table 5 summarizes the custom functions available on the GPIO pins of SARA-G340 / SARA-G350 modules. Function Description Default GPIO Configurable GPIOs GNSS supply enable Enable/disable the supply of u-blox positioning chips and modules connected to cellular module GPIO2 GPIO1, GPIO2, GPIO3, GPIO4 GNSS data ready Sense when u-blox positioning chip / module connected to 2 cellular module is ready for sending data by the DDC (I C) GPIO3 GPIO3 GNSS RTC sharing RTC (Real Time Clock) synchronization signal to u-blox positioning chips and modules connected to cellular module GPIO4 GPIO4 Network status indication Indicates network status: registered home network, registered roaming, data transmission, no service -- GPIO1, GPIO2, GPIO3, GPIO4 GSM Tx-burst indication Indicates when a GSM Tx burst/slot occurs -- GPIO1 Jamming condition indication Indicates when a jamming condition occurs -- GPIO1, GPIO2, GPIO3, GPIO4 General purpose input Input to sense high or low digital level -- GPIO1, GPIO2, GPIO3, GPIO4 General purpose output Output to set the high or the low digital level -- GPIO1, GPIO2, GPIO3, GPIO4 Pad disabled Tri-state with an internal active pull-down enabled GPIO1 GPIO1, GPIO2, GPIO3, GPIO4 Table 5: GPIO custom functions configuration UBX-13000993 - R19 Interfaces Page 16 of 47 SARA-G3 series - Data Sheet 3 Pin definition GND 3 50 GND V_INT 4 49 RSVD GND 5 6 48 RSVD DSR RI 7 47 RSVD DCD 8 46 DTR 9 RTS 10 CTS 11 TXD 12 RXD 13 GND 14 PWR_ON ANT GND GND GND GND GND GND VCC 51 VCC 50 GND 49 MIC_P 6 48 MIC_N RI 7 47 MIC_GND RSVD DCD 8 46 MIC_BIAS 45 RSVD DTR 9 45 SPK_N 44 RSVD RTS 10 44 SPK_P 43 GND CTS 11 43 GND 42 SIM_DET TXD 12 42 SIM_DET 41 VSIM RXD 13 41 VSIM 40 SIM_RST GND 14 40 SIM_RST 15 39 SIM_IO PWR_ON 15 39 SIM_IO RSVD 16 38 SIM_CLK GPIO1 16 38 SIM_CLK RSVD 17 37 RSVD RSVD 17 37 I2S_RXD RESET_N 18 36 RSVD RESET_N 18 36 I2S_CLK RSVD 19 35 RSVD RSVD 19 35 I2S_TXD GND 20 34 RSVD GND 20 34 I2S_WA GND 21 33 RSVD GND 21 33 RSVD 71 67 72 68 73 69 74 70 75 76 77 78 79 80 SARA-G300 SARA-G310 Top View 81 82 83 Pin 65-96: GND 85 86 91 87 92 88 93 89 94 TXD_AUX RXD_AUX RSVD RSVD RSVD 32K_OUT RSVD 90 95 22 23 24 25 26 27 28 29 GND 84 96 30 31 32 65 66 71 67 72 68 73 69 74 70 75 76 77 78 79 80 SARA-G340 SARA-G350 Top View 81 82 83 84 Pin 65-96: GND 85 86 91 87 92 88 93 89 94 90 95 22 23 24 25 26 27 28 29 96 30 31 32 GND VCC GND VCC 52 66 RSVD 51 ANT_DET 53 65 GND 2 GND GND GND GND ANT V_BCKP 55 54 TXD_AUX DSR GND VCC 56 RXD_AUX 5 GND 52 64 63 62 61 60 59 58 57 SCL GND GND 1 SDA 4 GND GND GPIO4 V_INT GND VCC GPIO3 3 RSVD 53 GND GND 55 54 GPIO2 2 56 GND V_BCKP 64 63 62 61 60 59 58 57 EXT32K 1 GND GND GND Pin assignment GND 3.1 Figure 3: SARA-G3 series modules – pin assignments UBX-13000993 - R19 Pin definition Page 17 of 47 SARA-G3 series - Data Sheet No Module Name Power domain I/O Description Remarks 1 All GND - N/A Ground All the GND pads must be connected to ground. 2 All V_BCKP - I/O Real Time Clock supply input/output V_BCKP = 2.3 V (typical) generated by the module to supply the Real Time Clock when VCC supply voltage is within valid operating range. See section 4.2.3 for detailed electrical specs. 3 All GND - N/A Ground All the GND pads must be connected to ground. 4 All V_INT - O Digital I/O Interfaces supply output V_INT = 1.8V (typical) generated by the module when it is switched-on. See section 4.2.3 for detailed electrical specs. 5 All GND - N/A Ground All the GND pads must be connected to ground. 6 All DSR GDI O UART data set ready Circuit 107 (DSR) in ITU-T V.24. Output driver class A. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 7 All RI GDI O UART ring indicator Circuit 125 (RI) in ITU-T V.24. Output driver class A. PU/PD class b. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 8 All DCD GDI O UART data carrier detect Circuit 109 (DCD) in ITU-T V.24. Output driver class A. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 9 All DTR GDI I UART data terminal ready Circuit 108/2 (DTR) in ITU-T V.24. Internal active pull-up to V_INT enabled. PU/PD class b. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 10 All RTS GDI I UART ready to send Circuit 105 (RTS) in ITU-T V.24. Internal active pull-up to V_INT enabled. PU/PD class c. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 11 All CTS GDI O UART clear to send Circuit 106 (CTS) in ITU-T V.24. Output driver class A. PU/PD class c. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. 12 All TXD GDI I UART transmitted data Circuit 103 (TxD) in ITU-T V.24. Internal active pull-up to V_INT enabled. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 13 All RXD GDI O UART received data Circuit 104 (RxD) in ITU-T V.24. Output driver class B. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 14 All GND - N/A Ground All the GND pads must be connected to ground. 15 All PWR_ON POS I Power-on input The PWR_ON pin has high input impedance: don’t leave it floating in noisy environment (an external pull-up resistor is required). See section 4.2.7 for detailed electrical specs. 16 SARA-G350 SARA-G340 GPIO1 GDI I/O GPIO Configurable GPIO: see Table 5 for the available custom functions. Output driver class A. PU/PD class b. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. All RSVD - N/A RESERVED pin Leave unconnected. 17 UBX-13000993 - R19 Pin definition Page 18 of 47 SARA-G3 series - Data Sheet No Module Name Power domain I/O Description Remarks 18 All RESET_N ERS I Reset signal A series Schottky diode is integrated in the module as protection, and then an internal 10 k pull-up resistor to V_INT is provided. See section 4.2.8 for detailed electrical specs. For more details regarding module reset, see [2]. 19 All RSVD - N/A RESERVED pin Leave unconnected. 20 All GND - N/A Ground All the GND pads must be connected to ground. 21 All GND - N/A Ground All the GND pads must be connected to ground. 22 All GND - N/A Ground All the GND pads must be connected to ground. 23 SARA-G350 SARA-G340 GPIO2 GDI I/O GPIO By default, the pin is configured to provide the GNSS supply enable function. Output driver class A. PU/PD class b. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 GPIO3 GDI I/O GPIO By default, the pin is configured to provide the GNSS data ready function. Output driver class B. PU/PD class c. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 32K_OUT - O 32 kHz output 32 kHz output suitable only to feed the EXT32K input giving the RTC reference clock, allowing low power idle-mode and RTC functions support. SARA-G350 SARA-G340 GPIO4 GDI I/O GPIO By default, the pin is configured to provide the GNSS RTC sharing function. Output driver class A. PU/PD class b. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 SDA DDC I/O I C bus data line Fixed open drain. No internal pull-up. Value at reset: T. See section 4.2.12 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 SCL DDC O I C bus clock line Fixed open drain. No internal pull-up. Value at reset: T. See section 4.2.12 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. 28 All RXD_AUX GDI O Auxiliary UART received data Circuit 104 (RxD) in ITU-T V.24. Output driver class B. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 29 All TXD_AUX GDI I Auxiliary UART transmitted data Circuit 103 (TxD) in ITU-T V.24. Internal active pull-up to V_INT enabled. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 30 All GND - N/A Ground All the GND pads must be connected to ground. 31 SARA-G350 SARA-G340 RSVD - N/A RESERVED pin Internally not connected. Leave unconnected. SARA-G310 SARA-G300 EXT32K - I 32 kHz input Input for RTC reference clock, needed to enter the low power idle-mode and provide RTC functions. See section 4.2.9 for detailed electrical specs. 32 All GND - N/A Ground All the GND pads must be connected to ground. 33 All RSVD - N/A RESERVED pin This pin must be connected to GND. 24 25 26 27 UBX-13000993 - R19 2 2 Pin definition Page 19 of 47 SARA-G3 series - Data Sheet No 34 Module Name Power domain I/O Description 2 Remarks SARA-G350 SARA-G340 I2S_WA GDI O I S word alignment Output driver class A. PU/PD class c. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 I2S_TXD GDI O I S transmit data Output driver class B. PU/PD class c. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 I2S_CLK GDI O I S clock Output driver class B. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. SARA-G350 SARA-G340 I2S_RXD GDI I I S receive data Internal active pull-down enabled. PU/PD class a. Value at reset: T/PD. See section 4.2.11 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Pin disabled. Leave unconnected. 38 All SIM_CLK SIM O SIM clock Value at reset: L. See section 4.2.10 for detailed electrical specs. 39 All SIM_IO SIM I/O SIM data Internal 4.7k pull-up to VSIM. Value at reset: L. See section 4.2.10 for detailed electrical specs. 40 All SIM_RST SIM O SIM reset Value at reset: L. See section 4.2.10 for detailed electrical specs. 41 All VSIM - O SIM supply output VSIM = 1.80 V typical if SIM card = 1.8V type. VSIM = 2.85 V typical if SIM card = 3.0V type. See section 4.2.3 for detailed electrical specs. 42 All SIM_DET GDI I SIM detection SIM card presence detection function. PU/PD class a. Value at reset: T/PU. See section 4.2.11 for detailed electrical specs. 43 All GND - N/A Ground All the GND pads must be connected to ground. 44 SARA-G350 SARA-G340 SPK_P AUDIO O Differential analog audio output (positive) Differential analog audio output shared for all the analog audio path modes. See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. SARA-G350 SARA-G340 SPK_N AUDIO O Differential analog audio output (negative) Differential analog audio output shared for all the analog audio path modes. See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. SARA-G350 SARA-G340 MIC_BIAS AUDIO O Microphone supply output Supply output for the external microphone. See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. SARA-G350 SARA-G340 MIC_GND AUDIO I Microphone analog reference Local ground for the external microphone (reference for the differential analog audio input). See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. SARA-G350 SARA-G340 MIC_N AUDIO I Differential analog audio input (negative) Differential analog audio input shared for all the analog audio path modes. See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. 35 36 37 45 46 47 48 UBX-13000993 - R19 2 2 2 Pin definition Page 20 of 47 SARA-G3 series - Data Sheet No Module Name Power domain I/O Description Remarks 49 SARA-G350 SARA-G340 MIC_P AUDIO I Differential analog audio input (positive) Differential analog audio input shared for all the analog audio path modes. See section 4.2.13 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. 50 All GND - N/A Ground All the GND pads must be connected to ground. 51 All VCC - I Module supply input All VCC pins must be connected to external supply. Supply input for internal BB PMU and transceiver on SARA-G3 modules product versions ‘02’ onward. See section 4.2.3, 4.2.4 for detailed electrical spec. 52 All VCC - I Module supply input All VCC pins must be connected to external supply. Supply input for the internal RF power amplifier on SARA-G3 modules product versions ‘02’ onward. See section 4.2.3, 4.2.4 for detailed electrical spec. 53 All VCC - I Module supply input All VCC pins must be connected to external supply. Supply input for the internal RF power amplifier on SARA-G3 modules product versions ‘02’ onward. See section 4.2.3, 4.2.4 for detailed electrical spec. 54 All GND - N/A Ground All the GND pads must be connected to ground. 55 All GND - N/A Ground All the GND pads must be connected to ground. 56 All ANT - I/O RF antenna 50  nominal impedance See section 4.2.5 for detailed electrical specs. 57 All GND - N/A Ground All the GND pads must be connected to ground. 58 All GND - N/A Ground All the GND pads must be connected to ground. 59 All GND - N/A Ground All the GND pads must be connected to ground. 60 All GND - N/A Ground All the GND pads must be connected to ground. 61 All GND - N/A Ground All the GND pads must be connected to ground. 62 SARA-G350 SARA-G340 ANT_DET ADC I Antenna detection Antenna presence detection function. See section 4.2.6 for detailed electrical specs. SARA-G310 SARA-G300 RSVD - N/A RESERVED pin Leave unconnected. 63 All GND - N/A Ground All the GND pads must be connected to ground. 64 All GND - N/A Ground All the GND pads must be connected to ground. 65-96 All GND - N/A Ground All the GND pads must be connected to ground. Table 6: SARA-G3 series module pin-out For more information about pin-out, see the SARA-G3 / SARA-U2 Series System Integration Manual [2]. For an explanation of abbreviations and terms used, see Appendix A. UBX-13000993 - R19 Pin definition Page 21 of 47 SARA-G3 series - Data Sheet 4 Electrical specifications Stressing the device above one or more of the ratings listed in the Absolute Maximum Rating section may cause permanent damage. These are stress ratings only. Operating the module at these or at any conditions other than those specified in the Operating Conditions sections (chapter 4.2) of the specification should be avoided. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Operating conditions ranges define those limits within which the functionality of the device is guaranteed. Where application information is given, it is advisory only and does not form part of the specification. 4.1 Absolute maximum rating Limiting values given below are in accordance with the Absolute Maximum Rating System (IEC 134). Symbol Description Condition Min Max Unit VCC Module supply voltage Input DC voltage at VCC pins -0.15 5.5 V V_BCKP RTC supply voltage Input DC voltage at V_BCKP pin -0.15 2.5 V GDI Generic digital interfaces Input DC voltage at Generic digital interfaces pins -0.15 2.2 V DDC DDC interface Input DC voltage at DDC interface pins -0.15 3.6 V SIM SIM interface Input DC voltage at SIM interface pins -0.30 3.6 V ERS External reset signal Input DC voltage at RESET_N pin -0.15 6.0 V POS Power-on signal Input DC voltage at PWR_ON pin -0.15 6.0 V AUDIO Audio pins Input DC voltage at Audio pins -0.15 3.0 V ADC Antenna detection pin Input DC voltage at ANT_DET pin -0.15 3.0 V P_ANT Antenna power Input RF power at ANT pin -8 dBm Rho_ANT Antenna ruggedness Output RF load mismatch ruggedness at ANT pin 20:1 VSWR Tstg Storage temperature range +85 °C -40 Table 7: Absolute maximum ratings The product is not protected against overvoltage or reversed voltages. If necessary, voltage spikes exceeding the power supply voltage specification, given in table above, must be limited to values within the specified boundaries by using appropriate protection devices. 4.1.1 Maximum ESD Parameter Min Typical Max Unit Remarks ESD sensitivity for all pins except ANT pin 1000 V Human Body Model according to JESD22-A114 ESD sensitivity for ANT pin 1000 V Human Body Model according to JESD22-A114 ESD immunity for ANT pin 4000 V Contact Discharge according to IEC 61000-4-2 8000 V Air Discharge according to IEC 61000-4-2 Table 8: Maximum ESD ratings u-blox cellular modules are Electrostatic Sensitive Devices (ESD) and require special precautions when handling. See Section 7.4 for ESD handling instructions. UBX-13000993 - R19 Electrical specifications Page 22 of 47 SARA-G3 series - Data Sheet 4.2 Operating conditions Unless otherwise specified, all operating condition specifications are at an ambient temperature of 25°C. Operation beyond the operating conditions is not recommended and extended exposure beyond them may affect device reliability 4.2.1 Operating temperature range Symbol Parameter Module Min Typical Max Units Topr Operating temperature range All -40 +25 +85 °C Remarks All -30 +85 °C Normal operating range see chapter 4.2.1.1 All -40 +85 °C Extended operating range see chapter 4.2.1.2 Table 9: Environmental conditions 4.2.1.1 Normal operating temperature range SARA-G3 series modules are fully functional and meet 3GPP specifications across the specified temperature range. 4.2.1.2 Extended operating temperature range SARA-G3 series modules are fully functional across the specified temperature range. RF performance may be affected outside the normal operating temperature range. 4.2.2 Module thermal resistance Symbol Parameter Rth,M-A Module-to-Ambient thermal resistance Rth,M-C Module-to-Case thermal resistance Min Typical Max Unit Remarks 10.6 °C/W Thermal resistance from the module internal temperature sensor to the ambient, with the module mounted on a 79 mm x 62 mm x 1.41 mm 4-Layers PCB with a high coverage of copper in still air conditions 1.7 °C/W Thermal resistance from the module internal temperature sensor to the module case, evaluated as the thermal resistance from the module internal temperature sensor to the ambient, with the module mounted on a 79 mm x 62 mm x 1.41 mm 4-Layers PCB with a high coverage of copper, with a robust aluminum heat-sink on the back of the application board, with forced air ventilation. Table 10: SARA-G3 series modules thermal resistance UBX-13000993 - R19 Electrical specifications Page 23 of 47 SARA-G3 series - Data Sheet 4.2.3 Supply/Power pins Symbol Parameter VCC ICC_PEAK Module supply normal operating voltage 21 18 Min Typical Max Unit 3.35 3.80 4.50 V Module supply extended operating voltage 19 3.00 4.50 V Module supply extended operating voltage 20 2.80 4.50 V 1.60 A Module peak of current consumption through all the VCC pins, during a GSM 1-slot transmit burst at maximum power level, with a mismatched antenna 1.90 A Module peak of current consumption through the VCC pin #51 of SARA-G3 modules product versions “02” onwards 300 mA 2.40 V 1.50 Module peak of current consumption through all the VCC pins, during a GSM 1-slot transmit burst at maximum power level, with a matched antenna V_BCKP Real Time Clock Supply input voltage I_BCKP Real Time Clock Supply average current consumption, at V_BCKP = 2.3 V 1.00 2.30 2.00 µA Table 11: Input characteristics of Supply/Power pins Symbol Parameter Min Typical Max Unit VSIM SIM Supply 1.76 1.80 1.84 V 2.78 2.85 2.91 V 2.19 2.30 2.42 V 2 mA 1.85 V V_BCKP Real Time Clock Supply output voltage I_BCKP Real Time Clock Supply output current capability V_INT Digital I/O Interfaces supply output voltage V_INT_RIPPLE Digital I/O Interfaces supply output peak-to-peak voltage ripple during active or connected mode 15 mV Digital I/O Interfaces supply output peak-to-peak voltage ripple during low power idle mode with power saving enabled 90 mV Digital I/O Interfaces supply output current capability 70 mA I_INT 1.75 1.80 Table 12: Output characteristics of Supply/Power pins 18 The input voltage at all the VCC must be above the normal operating range minimum limit to switch-on the module. Module is still fully functional when the input voltage at the VCC pins drops below the herein stated normal operating range minimum limit, but RF performance may be affected. 19 Range defined for all the VCC pins of product versions “00” and “01”, and the VCC pin #51 (supply input for internal baseband Power Management Unit and the internal transceiver) of product versions “02” onwards. Module may switch off when the input voltage at the related pins drops below the herein stated extended operating range minimum limit. 20 Range defined for the VCC pins #52 and #53 (supply input for the internal power amplifier) of product versions “02” onwards. 21 Use this figure to dimension maximum current capability of power supply. UBX-13000993 - R19 Electrical specifications Page 24 of 47 SARA-G3 series - Data Sheet 4.2.4 Current consumption Mode Module Band Condition Power Off Mode All Min Typ Max Unit - Module is switched off by AT+CPWROFF 36 40 µA Idle-Mode SARA-G300 (Power Saving enabled by AT+UPSV, SARA-G310 module in low power idle-mode, equivalent to +CFUN=4 or +COPS=2) - Averaged current over a 100-ms period, EXT32K fed by external 32.768 kHz signal 0.3 0.4 mA Averaged current over a 100-ms period, EXT32K fed by 32K_OUT output signal 3.9 4.0 mA SARA-G340 SARA-G350 - Averaged current over a 100-ms period 0.3 0.4 mA SARA-G300 SARA-G310 All Averaged current over a 10-minute period, 22 DRX = 9 , AT+UPSV=2 EXT32K fed by external 32.768 kHz signal 0.6 0.8 mA Averaged current over a 10-minute period, 22 DRX = 9 , AT+UPSV=2 EXT32K fed by 32K_OUT output signal 4.2 4.4 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=1 EXT32K fed by external 32.768 kHz signal 0.9 1.1 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=1 EXT32K fed by 32K_OUT output signal 4.5 4.7 mA Averaged current over a 10-minute period, 22 DRX = 9 , AT+UPSV=2 0.6 0.8 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=1 0.9 1.1 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=0 (default) EXT32K fed by external 32.768 kHz signal 4.2 4.4 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=0 (default) EXT32K fed by 32K_OUT output signal 4.5 4.7 mA Averaged current over a 10-minute period, 23 DRX = 5 , AT+UPSV=0 (default) EXT32K not fed 18.0 18.2 mA Cyclic Idle/Active-Mode (Power Saving enabled by AT+UPSV, Module registered with network) SARA-G340 SARA-G350 Active-Mode (Power Saving disabled by AT+UPSV, Module registered with network) GSM Connected Mode (Call enabled) GPRS Connected Mode (Call enabled) Table 13: VCC current consumption SARA-G300 SARA-G310 All All SARA-G340 SARA-G350 All Averaged current over a 10-minute period, 23 24 DRX = 5 , AT+UPSV=0 (default) 2.9 3.1 mA All 850, 900 Averaged current over a 10-second period, 1 Tx + 1 Rx slot Maximum Tx power (32.2 dBm typ.) 200 250 mA 1800, Averaged current over a 10-second period, 1900 1 Tx + 1 Rx slot Maximum Tx power (29.2 dBm typ.) 150 200 mA 850, 900 Averaged current over a 10-second period, 2 Tx + 3 Rx slots Maximum Tx power (30.5 dBm typ.) 300 350 mA 1800, Averaged current over a 10-second period, 1900 2 Tx + 3 Rx slots Maximum Tx power (27.5 dBm typ.) 210 260 mA All 25 22 Module is registered with the network, with a paging period of 2.12 s (2G network DRX setting = 9), with none neighbour cell. Module is registered with the network, with a paging period of 1.18 s (2G network DRX setting = 5), with 16 neighbour cells. 24 18.2 mA typical, 18.4 mA maximum for SARA-G340 and SARA-G350 modules product versions “00” 25 Averaged values for module current consumption through VCC pins in the listed modes/conditions 23 UBX-13000993 - R19 Electrical specifications Page 25 of 47 SARA-G3 series - Data Sheet 4.2.5 RF performance Parameter Min Max Unit Remarks Frequency range GSM 850 Uplink 824 849 MHz Module transmit Downlink 869 894 MHz Module receive Frequency range E-GSM 900 Uplink 880 915 MHz Module transmit Downlink 925 960 MHz Module receive Frequency range DCS 1800 Uplink 1710 1785 MHz Module transmit Downlink 1805 1880 MHz Module receive Frequency range PCS 1900 Uplink 1850 1910 MHz Module transmit Downlink 1930 1990 MHz Module receive Typical Max Table 14: Operating RF frequency bands Parameter Min Unit Remarks Receiver input sensitivity GSM 850 -109 dBm Downlink RF level @ BER Class II < 2.4 % Receiver input sensitivity E-GSM 900 -109 dBm Downlink RF level @ BER Class II < 2.4 % Receiver input sensitivity DCS 1800 -109 dBm Downlink RF level @ BER Class II < 2.4 % Receiver input sensitivity PCS 1900 -109 dBm Downlink RF level @ BER Class II < 2.4 % Condition: 50  source Table 15: Receiver sensitivity performance Parameter Min Maximum output power GSM 850 / E-GSM 900 Maximum output power DCS 1800 / PCS 1900 Typical Max Unit Remarks 32.2 dBm Uplink burst RF power for GSM or GPRS 1-slot TCH at maximum output power control level (PCL 5 or Gamma 3) 30.5 dBm Uplink burst RF power for GPRS 2-slot TCH at maximum output power control level (Gamma 3) 29.2 dBm Uplink burst RF power for GSM or GPRS 1-slot TCH at maximum output power control level (PCL 0 or Gamma 3) 27.5 dBm Uplink burst RF power for GPRS 2-slot TCH at maximum output power control level (Gamma 3) Condition: 50  output load Table 16: Transmitter maximum output power 4.2.6 ANT_DET pin Pin Name Parameter ANT_DET Output DC current pulse value Output DC current pulse time length Min Typical Max 20 3.7 5.4 Unit Remarks µA 8.1 ms Table 17: ANT_DET pin characteristics UBX-13000993 - R19 Electrical specifications Page 26 of 47 SARA-G3 series - Data Sheet 4.2.7 PWR_ON pin Pin Name Parameter Min Typical Max Unit Remarks PWR_ON Internal supply for Power-On Input Signal 2.19 2.30 2.42 V Real Time Clock supply (V_BCKP) L-level input -0.10 0.65 V High input impedance (no internal pull-up) H-level input 2.00 4.50 V High input impedance (no internal pull-up) L-level input current PWR_ON low time to switch-on the module -8 µA 5 ms Table 18: PWR_ON pin characteristics 4.2.8 RESET_N pin Pin Name Parameter Min Typical Max Unit Remarks RESET_N Internal supply for External Reset Signal 1.75 1.80 1.85 V Digital I/O Interfaces supply (V_INT) L-level input -0.10 0.15 V A series Schottky diode is integrated in the module as protection: the module senses a low level when the RESET_N pin is forced low. H-level input 1.40 4.50 V A series Schottky diode is integrated in the module as protection: the module senses a low level when the RESET_N pin is forced low. 10 k Internal pull-up to V_INT after the internal series Schottky diode -180 µA Pull-up resistance L-level input current RESET_N low time to perform a proper reset 50 ms SARA-G340, SARA-G350 RESET_N low time to perform a proper reset 3000 ms SARA-G300, SARA-G310 Table 19: RESET_N pin characteristics 4.2.9 EXT32K pin Pin Name Parameter Min EXT32K L-level input H-level input Input clock frequency 32.765 Typical Max Unit -0.25 0.20 V V_BCKP – 0.20 V_BCKP + 0.25 V V_BCKP = 2.3 V (typical) generated by the internal LDO linear regulator when valid VCC supply is present. 32.771 kHz Frequency tolerance: +/- 100 ppm 32.768 Remarks Table 20: EXT32K pin characteristics UBX-13000993 - R19 Electrical specifications Page 27 of 47 SARA-G3 series - Data Sheet 4.2.10 SIM pins Parameter Min Typical Max Unit Remarks 0.37 V VSIM = 1.80 V 0.60 V VSIM = 2.85 V 1.22 3.30 V VSIM = 1.80 V 1.95 3.30 V VSIM = 2.85 V 0.00 0.35 V VSIM = 1.80 V, Max value at IOL = +1.0 mA 0.00 0.35 V VSIM = 2.85 V, Max value at IOL = +1.0 mA Low-level input High-level input Low-level output High-level output 1.45 1.80 V VSIM = 1.80 V, Min value at IOH = -1.0 mA 2.50 2.85 V VSIM = 2.85 V, Min value at IOH = -1.0 mA µA 0.2 V < VIN < 3.3 V Input/Output leakage current 0.7 Internal pull-up resistor on SIM_IO to VSIM 4.7 k Clock frequency on SIM_CLK 3.25 MHz Table 21: SIM pins characteristics 4.2.11 Generic Digital Interfaces pins Parameter Min Typical Max Unit Remarks Internal supply for GDI domain 1.75 1.80 1.85 V Digital I/O Interfaces supply (V_INT) Input characteristic: L-level input -0.20 0.35 V Input characteristic: H-level input 1.30 1.95 V 0.00 0.20 V Max value at IOL = +3.0 mA for Driver Class A 0.00 0.35 V Max value at IOL = +6.0 mA for Driver Class A 0.00 0.20 V Max value at IOL = +2.5 mA for Driver Class B 0.00 0.35 V Max value at IOL = +5.0 mA for Driver Class B Output characteristics: L-level output Output characteristics: H-level output 1.60 1.80 V Min value at IOH = -3.0 mA for Driver Class A 1.45 1.80 V Min value at IOH = -6.0 mA for Driver Class A 1.60 1.80 V Min value at IOH = -2.5 mA for Driver Class B 1.45 1.80 V Min value at IOH = -5.0 mA for Driver Class B µA 0.2 V < VIN < 1.95 V -102 µA PU Class a -55 µA PU Class b -31 µA PU Class c 103 µA PD Class a 51 µA PD Class b 27 µA PD Class c Input/Output leakage current Pull-up input current Pull-down input current 0.7 Table 22: GDI pins characteristics UBX-13000993 - R19 Electrical specifications Page 28 of 47 SARA-G3 series - Data Sheet 4.2.11.1 AC characteristics of digital audio interfaces pins The 4-wire I2S digital audio interfaces can be configured in 2 different modes:  Normal I2S mode with Master role  PCM mode with Master role Normal I2S mode with Master role T1 T2 T3 I2S_CLK T4 T5 I2S_TX / I2S_WA T6 T7 I2S_RX Figure 4: AC characteristics of digital audio interface in normal I2S mode ( = 2, 4, 6, 8, 10, 12) T1 T2 T3 I2S_CLK T4 T5 I2S_TX / I2S_WA T6 T7 I2S_RX Figure 5: AC characteristics of digital audio interface in normal I2S mode ( = 3, 5, 7, 9, 11, 13) Parameter Description Min Typical T1 I2S_CLK period 3.902 1/T1 I2S_CLK frequency T2 I2S_CLK high time T3 I2S_CLK low time T4 T5 T6 T7 Max Unit Remarks 3.906 µs = 2,..,13 256 kHz = 2,..,13 1.933 1.953 µs = 2,..,13 1.933 1.953 µs = 2,..,13 I2S_WA period 125.0 µs = 2,..,13 I2S_WA frequency 8 kHz = 2,..,13 I2S_TX invalid before I2S_CLK low end 24 ns = 2,4,6,8,10,12 I2S_TX invalid before I2S_CLK high end 24 ns = 3,5,7,9,11,13 I2S_TX valid after I2S_CLK high begin 31 ns = 2,4,6,8,10,12 I2S_TX valid after I2S_CLK low begin 31 ns = 3,5,7,9,11,13 I2S_RX setup time before I2S_CLK high end 60 ns = 2,4,6,8,10,12 I2S_RX setup time before I2S_CLK low end 60 ns = 3,5,7,9,11,13 I2S_RX hold time after I2S_CLK low begin 12 ns = 2,4,6,8,10,12 I2S_RX hold time after I2S_CLK high begin 12 ns = 3,5,7,9,11,13 Table 23: AC characteristics of digital audio interface in normal I2S mode ( = 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13) UBX-13000993 - R19 Electrical specifications Page 29 of 47 SARA-G3 series - Data Sheet PCM mode with Master role I2S_WA T4 T1 T5 I2S_CLK T2 I2S_TX T3 T6 LSB T7 M SB T8 I2S_RX LSB T9 M SB Figure 6: AC characteristics of digital audio interface in PCM mode ( = 0) I2S_WA T4 T5 T1 I2S_CLK T6 I2S_TX LSB T7 T2 M SB T8 I2S_RX LSB T3 T9 M SB Figure 7: AC characteristics of digital audio interface in PCM mode ( = 1) Parameter Description Min Typical T1 I2S_CLK period 6.940 7.349 1/T1 T2 T3 Unit Remarks 6.944 µs = 0 7.353 µs = 1 144 kHz = 0 136 kHz = 1 3.452 3.472 µs = 0 3.656 3.676 µs = 1 3.452 3.472 µs = 0 3.656 3.676 µs = 1 I2S_WA period 125.0 µs = 0,1 I2S_WA frequency 8 kHz = 0,1 I2S_CLK frequency I2S_CLK low time I2S_CLK high time Max T4 I2S_CLK high begin to I2S_WA high begin -24 31 ns = 0,1 T5 I2S_CLK low end to I2S_WA high end -24 31 ns = 0,1 T6 I2S_TX invalid before I2S_CLK low end 24 ns = 0,1 T7 I2S_TX valid after I2S_CLK high begin 22 ns = 0,1 T8 I2S_RX setup time before I2S_CLK high end 60 ns = 0,1 T9 I2S_RX hold time after I2S_CLK low begin 12 ns = 0,1 Table 24: AC characteristics of digital audio interface in PCM mode ( = 0, 1) UBX-13000993 - R19 Electrical specifications Page 30 of 47 SARA-G3 series - Data Sheet 4.2.12 DDC (I2C) pins Parameter Min Typical Max Unit Remarks Internal supply for DDC domain 1.75 1.80 1.85 V Digital I/O Interfaces supply (V_INT) L-level input -0.20 0.35 V In accordance with I C bus specification H-level input 1.30 3.30 V In accordance with I C bus specification 0.40 V Max value at IOL = +3.0 mA 0.7 µA 0.2 V < VIN < 3.3 V L-level output 0.00 Input/Output leakage current Clock frequency on SCL 100 2 2 kHz Table 25: DDC pins characteristics 4.2.13 Audio pins Pin Name Parameter MIC_BIAS Microphone supply output voltage Typical Max 2.2 Unit Remarks V Provided by MIC_BIAS output pin with MIC_GND pin as reference. Microphone supply output current 4.0 mA Provided by MIC_BIAS output pin with MIC_GND pin as reference Load capacitance 0 nF Proper internal bypass capacitor is already provided to guarantee stable operation: an external capacitor cannot be directly connected to MIC_BIAS pin, but can be provided after a proper series resistor. Load resistance MIC_GND Min 1 Microphone ground k 0 V MIC_GND pin is internally connected to GND as a sense line Max Unit Remarks 0.8 Vpp Full scale differential voltage Table 26: Microphone supply (MIC_BIAS) characteristics Pin Name Parameter MIC_P/MIC_N Differential input voltage Min Typical Differential input resistance 50 Common mode DC voltage 0.5 Input capacitance 5 Signal to noise 75 Signal to distortion (THD) 65 Power supply rejection 49 k 10 V No internal DC blocking capacitor pF No internal DC blocking capacitor dB Gain stage = +12 dB, Bandwidth 300-3900 Hz dB 85 dB Table 27: Differential audio transmit path (MIC_P, MIC_N) input characteristics Pin Name Parameter Min Typical Max Unit Remarks SPK_P/SPK_N Maximum differential output voltage 4.0 4.1 4.2 Vpp Full scale differential open circuit voltage 1.25 Common mode output voltage Output current limit Output load resistance V 200 mA 250  pF 14 Single-ended output load capacitance Signal to noise 70 80 dB Load = 16 , Gain stage = +0 dB, Input signal = 0 dBFS, Code 0, A-weighted Signal to distortion (THD) 60 70 dB Load = 16 , Input signal = 0 dBFS Table 28: Differential audio receive path (SPK_P, SPK_N) output characteristics UBX-13000993 - R19 Electrical specifications Page 31 of 47 SARA-G3 series - Data Sheet 5 Mechanical specifications Pin 1 Indicator K M1 M2 K F Q E M1 P R L R G H1 J1 B J2 N H2 ANT pin J2 O H2 O E L I F D G H1 J1 D A C Figure 8: SARA-G3 series dimensions (bottom and sides views) Parameter Description A B C D E F G H1 H2 I J1 J2 K L M1 M2 N O P Q R Weight Module Height [mm] Module Width [mm] 26 Module Thickness [mm] Horizontal Edge to Lateral Pin Pitch [mm] Vertical Edge to Lateral Pin Pitch [mm] Edge to Lateral Pin Pitch [mm] Lateral Pin to Pin Pitch [mm] Lateral Pin Height [mm] Lateral Pin close to ANT Height [mm] Lateral Pin Width [mm] Lateral Pin to Pin Distance [mm] Lateral Pin to Pin close to ANT Distance [mm] Horizontal Edge to Central Pin Pitch [mm] Vertical Edge to Central Pin Pitch [mm] Central Pin to Pin Horizontal Pitch [mm] Central Pin to Pin Horizontal Pitch [mm] Central Pin to Pin Vertical Pitch [mm] Central Pin Height and Width [mm] Horizontal Edge to Pin 1 Indicator Pitch [mm] Vertical Edge to Pin 1 Indicator Pitch [mm] Pin 1 Indicator Height and Width [mm] Module Weight [g] Typical 26.0 16.0 2.4 2.0 2.5 1.05 1.1 0.8 0.9 1.5 0.3 0.2 2.75 2.75 1.8 3.6 2.1 1.1 0.9 1.0 0.6