L96 Hardware Design
GNSS Module Series
Rev. L96_Hardware_Design_V1.3
Date: 2018-08-20
Status: Released
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GNSS Module Series
L96 Hardware Design
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GNSS Module Series
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About the Document
History
Revision
Date
Author
Description
1.0
2017-10-27
Brooke WANG/
Kane ZHU
Initial
1.
2.
1.1
2017-12-22
Brooke WANG
3.
4.
1.2
2018-02-13
Brooke WANG/
Gene LI
1. Added a note about I2C interface in Chapter 2.2
and 3.7.
2. Updated the block diagram in Chapter 2.3.
1.
2.
3.
1.3
2018-08-20
Brooke WANG/
Kane ZHU
4.
5.
6.
7.
L96_Hardware_Design
Enabled 3D_FIX, JAM_DET and GEO_FENCE
interfaces for the module, and updated Figure 2
(Pin Assignment) for the three pins.
Added the description of 3D_FIX, JAM_DET and
GEO_FENCE interfaces in Table 4 (Pin
Description) and Chapter 3.8~3.10.
Updated the thickness of the module in Table 1
(Key Features) and Chapter 6 (Mechanical
Dimensions).
Updated the recommended footprint (Figure 22).
Updated the pin names of L96 module.
Updated the module state switch (Table 5).
Updated the average current consumption in GLP
mode and normal mode (Table 8).
Updated the RS-232 level shift circuit (Figure 11).
Updated the recommended antenna
specifications (Table 10).
Updated the current consumption (Table 13).
Updated the storage information (Chapter 7.1)
and the reflow soldering thermal profile and
related parameters (Chapter 7.2).
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GNSS Module Series
L96 Hardware Design
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 5
Figure Index ................................................................................................................................................. 6
1
Introduction .......................................................................................................................................... 7
1.1.
General Description................................................................................................................... 7
2
Product Concept .................................................................................................................................. 9
2.1.
General Description................................................................................................................... 9
2.2.
Key Features ........................................................................................................................... 10
2.3.
Block Diagram ......................................................................................................................... 11
2.4.
Evaluation Board ..................................................................................................................... 12
2.5.
Protocols Supported by the Module ........................................................................................ 12
3
Application Interfaces ....................................................................................................................... 13
3.1.
Pin Assignment........................................................................................................................ 13
3.2.
Pin Description ........................................................................................................................ 14
3.3.
Power Supply .......................................................................................................................... 16
3.4.
Operation Modes ..................................................................................................................... 17
3.4.1. Full on Mode................................................................................................................... 18
3.4.2. Standby Mode ................................................................................................................ 19
3.4.3. Backup Mode ................................................................................................................. 20
3.4.4. Periodic Mode ................................................................................................................ 21
3.4.5. AlwaysLocateTM Mode ................................................................................................... 23
3.4.6. GLP Mode ...................................................................................................................... 24
3.5.
Reset ....................................................................................................................................... 26
3.6.
UART Interface ........................................................................................................................ 27
3.7.
I2C Interface ............................................................................................................................ 28
3.8.
3D_FIX Interface ..................................................................................................................... 29
3.9.
JAM_IND Interface .................................................................................................................. 29
3.10. GEO_FENCE Interface ........................................................................................................... 30
3.11. EASY Autonomous AGPS Technology ................................................................................... 30
3.12. EPO Offline AGPS Technology ............................................................................................... 31
3.13. Multi-tone AIC .......................................................................................................................... 31
3.14. ANTON .................................................................................................................................... 31
3.15. LOCUS .................................................................................................................................... 32
3.16. PPS VS. NMEA ....................................................................................................................... 32
4
Antenna Interfaces............................................................................................................................. 34
4.1.
Antenna Specifications ............................................................................................................ 34
4.2.
Recommended Circuits for Antenna ....................................................................................... 34
4.2.1. Active Antenna Reference Designs ............................................................................... 35
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4.2.1.1. Reference Design of Active Antenna without ANTON ........................................... 35
4.2.1.2. Reference Design of Active Antenna with ANTON ................................................ 35
4.2.2. Passive Antenna Reference Designs ............................................................................ 36
4.2.2.1. Reference Design of Passive Antenna without External LNA ............................... 36
4.2.2.2. Reference Design of Passive Antenna with External LNA .................................... 37
4.2.3. Internal Antenna ............................................................................................................. 38
4.3.
PCB Layout Suggestion .......................................................................................................... 39
5
Electrical, Reliability and Radio Characteristics ............................................................................ 40
5.1.
Absolute Maximum Ratings .................................................................................................... 40
5.2.
Operating Conditions .............................................................................................................. 41
5.3.
Current Consumption .............................................................................................................. 41
5.4.
Reliability Tests ........................................................................................................................ 42
5.5.
ESD Protection ........................................................................................................................ 42
6
Mechanical Dimensions .................................................................................................................... 44
6.1.
Top and Side Dimensions of the Module ................................................................................ 44
6.2.
Bottom Dimensions and Recommended Footprint ................................................................. 45
6.3.
Top and Bottom Views of the Module ..................................................................................... 46
7
Storage, Manufacturing and Packaging .......................................................................................... 47
7.1.
Storage .................................................................................................................................... 47
7.2.
Manufacturing and Soldering .................................................................................................. 47
7.3.
Tape and Reel Packaging ....................................................................................................... 49
8
Appendix A References..................................................................................................................... 51
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Table Index
TABLE 1: KEY FEATURES ............................................................................................................................... 10
TABLE 2: SUPPORTED PROTOCOLS............................................................................................................. 12
TABLE 3: I/O PARAMETERS DEFINITION ....................................................................................................... 14
TABLE 4: PIN DESCRIPTION ........................................................................................................................... 14
TABLE 5: MODULE STATE SWITCH ................................................................................................................ 17
TABLE 6: DEFAULT CONFIGURATION ............................................................................................................ 18
TABLE 7: FORMAT OF THE PMTK COMMAND ENABLING PERIODIC MODE ............................................. 21
TABLE 8: AVERAGE CURRENT CONSUMPTION IN GLP MODE AND NORMAL MODE ............................. 25
TABLE 9: GEO_FENCE VOLTAGE LEVEL STATUS IN DIFFERENT URC REPORT MODES ....................... 30
TABLE 10: RECOMMENDED ANTENNA SPECIFICATIONS........................................................................... 34
TABLE 11: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 40
TABLE 12: POWER SUPPLY RATINGS ........................................................................................................... 41
TABLE 13: CURRENT CONSUMPTION ........................................................................................................... 41
TABLE 14: RELIABILITY TESTS....................................................................................................................... 42
TABLE 15: RECOMMENDED THERMAL PROFILE PARAMETERS ............................................................... 48
TABLE 16: REEL PACKAGING ......................................................................................................................... 50
TABLE 17: RELATED DOCUMENTS ................................................................................................................ 51
TABLE 18: TERMS AND ABBREVIATIONS ...................................................................................................... 51
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Figure Index
FIGURE 1: BLOCK DIAGRAM ........................................................................................................................... 11
FIGURE 2: PIN ASSIGNMENT ......................................................................................................................... 13
FIGURE 3: INTERNAL POWER CONSTRUCTION.......................................................................................... 17
FIGURE 4: RTC SUPPLY FROM NON-CHARGEABLE BATTERY .................................................................. 20
FIGURE 5: REFERENCE CHARGING CIRCUIT FOR RECHARGEABLE BATTERIES ................................. 21
FIGURE 6: OPERATION MECHANISM OF PERIODIC MODE........................................................................ 23
FIGURE 7: POWER CONSUMPTION IN DIFFERENT SCENARIOS (ALWAYSLOCATETM MODE) ............... 24
FIGURE 8: REFERENCE OC CIRCUIT FOR MODULE RESET...................................................................... 26
FIGURE 9: MODULE RESET TIMING .............................................................................................................. 26
FIGURE 10: REFERENCE DESIGN FOR UART PORT ................................................................................... 27
FIGURE 11: RS-232 LEVEL SHIFT CIRCUIT ................................................................................................... 28
FIGURE 12: REFERENCE DESIGN FOR I2C INTERFACE ............................................................................ 29
FIGURE 13: PPS VS. NMEA TIMING ............................................................................................................... 32
FIGURE 14: REFERENCE DESIGN FOR ACTIVE ANTENNA WITHOUT ANTON ......................................... 35
FIGURE 15: REFERENCE DESIGN FOR ACTIVE ANTENNA WITH ANTON ................................................. 36
FIGURE 16: REFERENCE DESIGN FOR PASSIVE ANTENNA WITHOUT LNA ............................................ 37
FIGURE 17: REFERENCE DESIGN FOR PASSIVE ANTENNA WITH LNA .................................................... 37
FIGURE 18: REFERENCE DESIGN FOR INTERNAL ANTENNA ................................................................... 38
FIGURE 19: PCB LAYOUT................................................................................................................................ 39
FIGURE 20: TOP AND SIDE DIMENSIONS ..................................................................................................... 44
FIGURE 21: BOTTOM DIMENSIONS ............................................................................................................... 45
FIGURE 22: RECOMMENDED FOOTPRINT ................................................................................................... 45
FIGURE 23: TOP VIEW OF THE MODULE ...................................................................................................... 46
FIGURE 24: BOTTOM VIEW OF THE MODULE .............................................................................................. 46
FIGURE 25: RECOMMENDED REFLOW SOLDERING THERMAL PROFILE................................................ 48
FIGURE 26: TAPE AND REEL SPECIFICATIONS ........................................................................................... 49
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GNSS Module Series
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1
Introduction
This document defines and specifies L96 GNSS module. It describes the hardware interfaces, external
application reference circuits, mechanical size and air interface of L96 module.
This document can help customers quickly understand the interface specifications, as well as electrical
and mechanical details of L96 module. Other documents such as L96 software application notes and user
guides are also provided. These documents ensure customers can use L96 module to design and set up
mobile applications quickly.
1.1. General Description
The following safety precautions must be observed during all phases of operation, such as usage, service
or repair of any cellular terminal or mobile incorporating L96 module. Manufacturers of the cellular terminal
should send the following safety information to users and operating personnel, and incorporate these
guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for customers’
failure to comply with these precautions.
Full attention must be given to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. Please comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. The operation
of wireless appliances in an aircraft is forbidden to prevent interference with
communication systems. If the device offers an Airplane Mode, then it should be
enabled prior to boarding an aircraft. Please consult the airline staff for more
restrictions on the use of wireless devices on boarding the aircraft.
Wireless devices may cause interference on sensitive medical equipment, so
please be aware of the restrictions on the use of wireless devices when in
hospitals, clinics or other healthcare facilities.
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Cellular terminals or mobiles operating over radio signals and cellular network
cannot be guaranteed to connect in all possible conditions (for example, with
unpaid bills or with an invalid (U)SIM card). When emergent help is needed in such
conditions, please remember using emergency call. In order to make or receive a
call, the cellular terminal or mobile must be switched on in a service area with
adequate cellular signal strength.
The cellular terminal or mobile contains a transmitter and receiver. When it is ON, it
receives and transmits radio frequency signals. RF interference can occur if it is
used close to TV set, radio, computer or other electric equipment.
In locations with potentially explosive atmospheres, obey all posted signs to turn
off wireless devices such as your phone or other cellular terminals. Areas with
potentially explosive atmospheres include fuelling areas, below decks on boats,
fuel or chemical transfer or storage facilities, areas where the air contains
chemicals or particles such as grain, dust or metal powders, etc.
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2
Product Concept
2.1. General Description
L96 is a single receiver module integrated with GPS, GLONASS, Galileo (RLM supported) and BeiDou
systems. It is able to achieve the industry’s highest level of sensitivity, accuracy and TTFF with the lowest
power consumption in a small-footprint lead-free package. The embedded flash memory provides a
capacity for storing user-specific configurations and allows for future updates.
The module supports multiple positioning and navigation systems including autonomous GPS, GLONASS,
Galileo, BeiDou, SBAS (including WAAS, EGNOS, MSAS and GAGAN), QZSS, DGPS, and AGPS.
Designed with several advanced power saving modes including periodic, AlwaysLocateTM, standby and
backup modes, L96 has excellent low-power consumption in different scenarios.
EASY technology as one kind of AGPS is a key feature of L96 module. Capable of collecting and
processing all internal aiding information like GPS time, ephemeris, last position, etc., the GNSS module
delivers a very short TTFF in either Hot or Warm start.
L96 module is an SMD type module with a compact 14.0mm × 9.6mm × 2.0mm form factor. It can be
embedded in customers’ applications through the 31-pin pads with 1.0mm pitch. It provides necessary
hardware interfaces for connection with the main PCB.
The module is fully compliant with EU RoHS directive.
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2.2. Key Features
Table 1: Key Features
Features
Implementation
Receiver Type1)
⚫
⚫
⚫
⚫
GPS L1 C/A (1575.42MHz)
GLONASS L1 C/A (1598.0625MHz~1605.375MHz)
Galileo L1 C/A (1575.42MHz)
BeiDou B1 C/A (1561.098MHz)
Receiver Frequency
⚫
⚫
⚫
⚫
GPS frequency: 1575.42MHz±1.023MHz
GLONASS frequency: 1602MHz±4MHz
Galileo frequency: 1575.42MHz±2MHz
BeiDou frequency: 1561.098MHz±2MHz
Power Supply
⚫
⚫
Supply voltage: 2.8V~4.3V
Typical: 3.3V
Power Consumption
(GPS+GLONASS)
⚫
⚫
⚫
Tracking: 22mA @-130dBm, VCC=3.3V
Acquisition: 25mA @-130dBm, VCC=3.3V
Backup: 7uA @-130dBm, V_BCKP=3.3V
Sensitivity
⚫
⚫
⚫
Acquisition: -148dBm
Reacquisition: -160dBm
Tracking: -165dBm
TTFF (EASY Enabled)
⚫
⚫
⚫
Cold Start: