W7020

Preliminary Data Sheet September 2000 W7020 Bluetooth* Radio Module Features + + + n n Digital receive signal strength indicator (RSSI) Small-outline module ceramic land grid array (MCLGA) package (9.7 x 14.0 x 1.6 mm) Complete Bluetooth RF solution Compliant with Bluetooth specification version 1.0 Highly integrated module including an RF transceiver IC, antenna filter, and transmit/receive baluns 0 dBm output power at 50 Ω 2.7 V operation enabling long battery life 3.2 kHz low-power idle-mode clock Applications n n n n Cellular phones PCs and peripherals PDAs Consumer appliances + + + RX BALUN LNA 90° 2402 MHz to 2495 MHz 0 dBm/–70 dBm ANTENNA FILTER 135° LIMITER S DISCRIMINATOR RECEIVER DATA OUT φ 45° ANTENNA SWITCH Radio ASIC TX AMPLIFIER VCO BUFFER 13 MHz CLOCK GENERATION 1 MHz 3.2 kHz TX BALUN GLPF INTEGER N PLL 13 MHz XTAL W7020 RADIO MODULE TANK LPF NOTE: SHADED AREA IS EXTERNAL TO MODULE TRANSMITTER DATA IN UNLOCK PLL Figure 1. Circuit Block Diagram *Bluetooth is a trademark of Telefonaktiebolaget LM Ericsson. W7020 Bluetooth Radio Module Preliminary Data Sheet September 2000 Table of Contents Features...............................................................................................................................................................1 Applications .........................................................................................................................................................1 Description...........................................................................................................................................................3 Pin Information.....................................................................................................................................................5 Absolute Maximum Ratings..................................................................................................................................6 Handling Precautions ...........................................................................................................................................6 Operating Range..................................................................................................................................................7 Operating Conditions............................................................................................................................................7 Digital Inputs/Outputs...........................................................................................................................................7 Electrical Characteristics ......................................................................................................................................8 Supply Currents................................................................................................................................................8 Power Consumption..........................................................................................................................................8 Transmit Performance ......................................................................................................................................9 Receiver Performance....................................................................................................................................10 Synthesizer Performance................................................................................................................................10 Interface Signal Description ...............................................................................................................................11 Serial Interface...................................................................................................................................................12 CAP State Diagram ........................................................................................................................................13 Reserved Instructions .....................................................................................................................................15 W7020 Registers ............................................................................................................................................15 Channel Register Programming Example .......................................................................................................21 Transmit and Receiver Application.....................................................................................................................22 Application Circuit Diagram ............................................................................................................................22 Timing Information .........................................................................................................................................23 Power-On Reset and XO Start-Up ..................................................................................................................24 Powerup Initialization ..................................................................................................................................25 Wake-Up for Connection .............................................................................................................................26 RSSI...............................................................................................................................................................27 Characteristic Curves.........................................................................................................................................28 Soldering Profile ................................................................................................................................................34 Outline Diagram.................................................................................................................................................35 34-pin MCLGA................................................................................................................................................35 Manufacturing Information .................................................................................................................................36 Ordering Information ..........................................................................................................................................36 2 Lucent Technologies Inc. Preliminary Data Sheet September 2000 W7020 Bluetooth Radio Module Description The W7020 Bluetooth radio module is a short-range microwave-frequency radio transceiver for Bluetooth links. It operates in the globally available 2.4 GHz to 2.5 GHz ISM free band. The radio is based on a bipolar complementary metal-oxide semiconductor (BiCMOS) RFIC. The antenna filter and the RX and TX baluns are all integrated into the radio module. As illustrated in Figure 2, the radio module requires only a baseband controller, an external antenna connected through a 50 Ω characteristic impedance line, and a 13 MHz crystal or reference clock signal. It is controlled by the digital baseband circuit through the serial interface bus and separate strobe signals. The TX and RX data pins also connect to the baseband with a maximum bit rate of 1 Mbit/s. The power supply is partitioned into two paths, one for the VCO circuit and one for all other module supply connections. Each of the supplies should be externally low-frequency decoupled. Fast-frequency hopping (FFH) of 1600 hops/s is used with a channel spacing of 1 MHz so that the radio link is less sensitive to signal fading due to multipath; therefore, antenna diversity is not required. The modulation is Gaussian frequency shift keying (GFSK) with a BT product of 0.5. The channel bandwidth is 1 MHz and the modulation index is between 0.28 and 0.35. A binary one is indicated by a positive frequency deviation, and a binary zero is indicated by a negative frequency deviation. ANTENNA BASEBAND INTERFACE 17 CLOCK CONTROL OUTPUTS 34 2 SYS_CLK (13 MHz) TX_CLK (1 MHz) LPO_CLK (3.2 kHz) SERIAL INTERFACE POWER SUPPLIES VCC SUPPLY REGULATOR VCC-VCO 13 MHz REFERENCE CLOCK XO_N 100 pF XO_P 8 7 11 20 31 25 27 26 29 SI_CLK (4 MHz) SI_CDI (DATA) SI_CMS (MODE SELECT) SI_CDO (DATA OUTPUT) STROBE INPUTS SYS_CLK_REQ SYNT_ON PHD_OFF TX_ON RX_ON PX_ON DATA INTERFACE BASEBAND IC W7020 RADIO SUBSYSTEM 33 24 21 3 5 32 22 4 TX_DATA RX_DATA RESET SIGNALS GND 1, 6, 10, 13, 14, 15, 16, 18, 19, 23, 28 30 POR (DELAYED RESET) POR_EXT HOST CONTROLLER 9 Figure 2. System Connections Lucent Technologies Inc. 3 W7020 Bluetooth Radio Module Preliminary Data Sheet September 2000 Description (continued) As shown in Figure 3, the antenna filter bandpass filters the radio signal to the antenna switch. The switch directs the signal to the RX balun or from the TX balun. The RX balun performs the transformation from unbalanced to balanced for the RX signal and connects to the low-noise amplifier (LNA). The LNA is followed by an image rejection mixer, so no additional image filter is needed before the mixer. The IF signal out of the mixer is filtered by a bandpass filter and followed by a limiting amplifier and frequency discriminator, giving the RX data output. This discriminator output is offset-corrected. The receiver IF and detection circuits are all integrated, requiring no external components. The RSSI level is available digitally through the serial interface. The transmitter path utilizes direct modulation of the TX data-bit stream onto the VCO. The TX data is shaped by the Gaussian filter and then is applied to the VCO tank. The VCO is buffered internally and driven to the TX balanced output through another amplifier stage. The TX balun performs the transformation of the balanced to unbalanced signal and connects to the antenna switch. The VCO frequency operating in the 2.4 GHz ISM band is controlled by the phase-locked loop (PLL) synthesizer through the loop filter. The reference clock oscillator is provided so that only a crystal resonator needs to be added externally to the module, or the reference clock input can be overdriven with an external signal such as from a TCXO or VCXO. The frequency accuracy requirement is ±20 ppm. POR_EXT RX_DATA TX_ON XO_N TX_CLK XO_P RX_ON GND GND 11 10 9 8 7 6 5 4 3 2 NC GND 1 34 SYS_CLK 33 SYS_CLK_REQ 32 PX_ON 31 LPO_CLK 30 POR 29 SI_CDO 28 GND 12 XO LNA SWITCH RX BALUN TX AMP TX BALUN Φ ∑ BPF DISC GND 13 GND 14 GND 15 LOOP FILTER ANTENNA FILTER VCO TANK GLPF LO PLL GND 16 ANT 17 18 GND VCC 19 GND 20 VCC_VCO 21 PHD_OFF 22 TX_DATA 23 GND 24 SYNT_ON 25 SI_CLK 26 SI_CMS 27 SI_CDI Figure 3. Module Block Diagram with Pinout 4 Lucent Technologies Inc. Preliminary Data Sheet September 2000 W7020 Bluetooth Radio Module Pin Information Table 1. Pin Descriptions Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Symbol GND TX_CLK TX_ON RX_DATA RX_ON GND XO_P XO_N POR_EXT GND VCC NC GND GND GND GND ANT GND GND VCC_VCO PHD_OFF TX_DATA GND SYNT_ON SI_CLK SI_CMS SI_CDI GND SI_CDO POR LPO_CLK PX_ON SYS_CLK_REQ SYS_CLK Type* Ground D Output D Input D Output D Input Ground A Input A Input D Input Ground Power — Ground Ground Ground Ground RF 50 Ω Ground Ground Power D Input D Input Ground D Input D Input D Input D Input Ground D Output D Output D Output D Input D Input D Output 1 MHz clock Transmit power on Received data input Receiver power on Common ground Crystal positive input Crystal negative input or external clock input External power-on reset Common ground Common power supply Not connected Common ground Common ground Common ground Common ground Antenna input/output Common ground Common ground VCO power supply Open PLL Transmit data input Common ground Synthesizer (PLL) powerup Serial interface clock Serial interface mode select Serial interface data input Common ground Serial interface data output Power-on reset 3.2 kHz low-power clock Packet on System clock request System clock Description Common ground *A = analog; D = digital. Lucent Technologies Inc. 5 W7020 Bluetooth Radio Module Preliminary Data Sheet September 2000 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Ambient Operating Temperature Storage Temperature Lead Temperature (soldering, 10 s) Positive Supply Voltage Power Dissipation ac peak-to-peak Input Voltage Digital Voltages Symbol TA Tstg — VCC PD Vp-p — Min –40 –65 — 0 — 0 –0.3 Typ 25 — — — — — — Max 100 150 230 4.5 350 VCC VCC + 0.3 Unit °C °C °C V mW V V Handling Precautions Although protection circuitry has been designed into this device, proper precautions should be taken to avoid exposure to electrostatic discharge (ESD) during handling and mounting. Lucent Technologies Microelectronics Group employs a human-body model (HBM) and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. ESD voltage thresholds are dependent on the circuit parameters used to define the model. No industry-wide standard has been adopted for CDM. However, a standard HBM (resistance = 1500 Ω, capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM ESD threshold presented here was obtained by using these circuit parameters: Parameter ESD Threshold Voltage ESD Threshold Voltage (corner pins) Method HBM CDM Rating 2000 500 Unit V V 6 Lucent Technologies Inc. Preliminary Data Sheet September 2000 W7020 Bluetooth Radio Module Operating Range Performance is not guaranteed over the full range of all conditions possible within this table. However, it lists the ranges of external conditions in which the W7020 provides general functionality, which may be useful in specific applications, without risk of permanent damage. The conditions for guaranteed performance are described in the Electrical Characteristics section. Parameter Operating Temperature External Reference Clock Input Level Nominal Operating Voltage Min –35 0.4 2.7 Typ 25 — — Max 85 2.0 3.6 Unit °C Vp-p V Operating Conditions Parameter Frequency Range Reference Clock Frequency External Reference Clock Level* Supply Voltage Antenna Load (VSWR ≤ 2.0) Operating Temperature * Optional overdrive on XO_N pin, ac-coupled. Min 2.402 12.999740 0.4 2.7 25 –30 Typ — 13.000000 — 2.8 50 25 Max 2.495 13.000260 1.0 3.0 100 75 Unit GHz MHz Vp-p V Ω ºC Digital Inputs/Outputs Parameter Logical Input Low (0) Logical Input High (1) Input Leakage Current Input Capacitance Crystal Input Capacitance (XO_IN) Rise/Fall Time of Digital Inputs Logical Output Low (0) Logical Output High (1) LPO Clock Frequency, Trimmed † Min –0.3 0.8 * VCC — — — — — VCC – 0.4 — — Typ 0 VCC — — 2.5 — 0 VCC 3.2 — Max 0.2 * VCC VCC + 0.3 5 15 — 20 0.4 — — ±250 Unit V V µA pF pF ns V V kHz ppm LPO Clock Frequency Tolerance † Adjusted to 3.2 kHz by the baseband circuit. Lucent Technologies Inc. 7 W7020 Bluetooth Radio Module Preliminary Data Sheet September 2000 Electrical Characteristics Specifications are guaranteed for VCC = 2.8 Vdc, TA = 25 °C ± 10 °C. Supply Currents Parameter Supply Current*: Standby Synthesizer On Receive Mode Transmit Mode Min — — — — Typ 50 22 40 33 Max 100 — 52 44 Unit µA mA mA mA *Currents reflect continuous operation, not TDD mode of operation. Power Consumption Mode TX RX SYNTH ON Standby DM1 DM5 DH1 DH5 HV1 HV3 Page Scan Park Mode (1 s interval) TX/RX Data Rate Typ Max Unit (kbits/s) — — — — 14.4/14.4 286.7/286.7 172.8/172.8 723.2/57.6 64/64 64/64 — — 33 40 22 50 18 32 18 32 30 10 511 108 44 52 — 100 — — — — — — — — mA mA mA µA mA mA mA mA mA mA µA µA 8 Lucent Technologies Inc. Preliminary Data Sheet September 2000 W7020 Bluetooth Radio Module Electrical Characteristics (continued) Specifications are guaranteed for VCC = 2.8 Vdc ± 100 mV, TA = 25 °C ± 10 °C. Transmit Performance Transmitter power and spectrum characteristics are measured in 100 kHz RBW, unless otherwise specified. Parameter Frequency Band Frequency Accuracy* Frequency Drift: 1-slot Packet 3- and 5-slot Packets Frequency Deviation: 00001111 Pattern 01010101 Pattern Transmit Power 20 dB Signal BW (PN9 PRBS data, in 10 kHz RBW) GFSK Modulation Spectrum: ±>550 kHz ±1.550 MHz—2.450 MHz (alternate channel) ±>2.550 MHz (second alternate channel) ±13 MHz Spurious Emissions: 30 MHz—1 GHz (other than ranges listed below) 810 MHz—960 MHz 1 GHz—12.75 GHz (other than ranges listed below) 1.8 GHz—1.99 GHz 5.1 GHz—5.3 GHz Min 2402 — — — ±140 ±115 –2 — — — — — — — — — — Typ — — 5 15 ±150 — 0 — –21 –57 –63 –70