RFW322-M Vishay RFWaves RFW322-M Transceiver Module FEATURES * Designed for short range wireless communication in the 2.4 GHz - world wide license free band * Data rate - up to 3 mbit/s * Simple 3 line digital interface * Low power consumption - ideal for battery operated devices * + 6 dBm typical peak output transmission power * - 73 dBm typical sensitivity * Complies with FCC regulations * Wide range operating voltage (2.6 - 3.5 V) * Unique Direct Sequence Spread Spectrum Code * Short signal acquisition time (1.2 s) The company's products are covered by one or more of the following: Taiwan Patent No. 155994, Taiwan Patent No. 176767, USA Patent No. 6,535,545. Other patents pending DESCRIPTION The RFW322-M ISM Transceiver Module is a shortrange wireless radio transceiver, designed by Vishay RFWaves*. The transceiver is intended for use in the world wide unlicensed Industrial, Scientific and Medical (ISM) band of 2400 - 2483.5 MHz, complying with worldwide regulations and standards. The module core consists of 2 chips, offering small size, low power consumption and simple integration with applications. The module antenna interface reflects a 200 differential impedance. Module has 3 digital control lines. The data I/O line is a serial interface. RFW322-M the transceiver was designed for low power consumption. During standby, the transceiver almost does not consume any power (0.1 A at Vcc = 3 V). It features a very short wakeup Document Number 81218 Rev. 1.0, 16-Nov-05 time of 20 s, and the signal acquisition time is only 1.2 s. Thus, by using the standby mode in a frequent manner, an efficient power consumption management method can be applied. The communication link between the transceivers is based on a unique Direct Sequence Spread Spectrum (DSSS) pulse pipe. The modulation scheme is 100 % Amplitude Shift Keying (ASK). The module interface has 12 pads and is soldered on a motherboard PCB like a regular SMT component. * Vishay Advanced Technologies ltd. RFWaves division For more information please contact: RFTransceivers@vishay.com www.vishay.com 1 RFW322-M Vishay RFWaves PIN OUT AND MECHANICAL DIMENSIONS in millimeters 16.1 4 3 2 1 5 12 11 11 10 6 7 8 9 19579 Top View PINOUT MECHANICAL DIMENSIONS (mm) 1 2 3 4 5 6 VCC RF ACT VCC PD GND GND RSSI 7 8 9 10 11 12 TX/RX TXD/RXD VCC GD VCC OSC RF1 RF2 Overall length Overall width PCB thickness Max overall thickness 16.1 11 0.6 2.5 ABSOLUTE MAXIMUM RATING PARAMETER Supply voltage All input or output voltages with respect to ground MIN - 0.3 - 0.3 MAX 6.0 Vcc + 0.3 UNIT V V Temperature under bias - 10 70 C Storage temperature - 60 100 C Digital output short-circuit duration (to GND) continues Stresses exceeding those listed under "Absolute Maximum Rating" may cause permanent damage to the devices. These are stress ratings only, and functional operation of the devices at these or any other conditions, beyond those indicated in the operational sections of the datasheet, is not implied. Exposure to absolute maximum rating conditions for extended periods may affect devices reliability. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the I/O buffers. ! www.vishay.com 2 Life Support Policy and Use in Safety-Critical Applications Vishay RFWaves' products are not authorized for use in life-support or saftey-critical applications. For more information please contact: RFTransceivers@vishay.com Document Number 81218 Rev. 1.0, 16-Nov-05 RFW322-M Vishay RFWaves TRANSCEIVER INTERFACE The RFW322-M transceiver includes the following 12 pads interface. NAME VCC GD VCC RF VCC OSC VCC PD GND GND CHARACTERISTIC Transmitter pulse generator power supply input. A regulated voltage of 2.6 - 3.5 Volts. RF amplifier power supply input. A regulated voltage of 2.6 - 3.5 Volts. Oscillator power supply input. A regulated voltage of 2.6 - 3.5 Volts. Receiver peak detector power supply input. A regulated voltage of 2.6 - 3.5 Volts. Apply the supply ground to this pin. Apply the supply ground to this pin. Tx/Rx* Mode selection input. Apply Vcc for transmit mode. Apply 0 V (GND) for receive mode. ACT* Apply 0 V (GND) for standby mode. Apply Vcc to this pin to turn the module on. It typically takes the module 20 s to wake up into a fully operational mode. CMOS-level pin. TxD/RxD* In Tx mode this is an input pin, positive edge trigger. Every time TxD goes from GND to Vcc, a spread bit is transmitted. In Rx mode this is an output pin. CMOS-level pin. RSSI When used, reflects the average RF power detected by the receiver. Connect to the RSSI port in the RFW-D100 or any equivalent interface. RF1 / RF2 Connect a 200 ohm differential impedance antenna to this port, or a proper matching circuit to any other antenna. * ESD protected pin. ELECTRICAL CHARACTERISTICS TA = 25 C, VCC = 2.7 V to 3.3 V, unless otherwise specified. PARAMETER TEST CONDITIONS Supply voltage (All 3 ports) Operating ambient temperature Current consumption in standby mode ACT = GND I/O = High Z at Vcc = 3 V Wakeup time All input pins (TxD/RxD, ACT, Tx/Rx) Rise time Fall time Input capacitance ACT Logic high input Logic low input Sink current ACT = Vcc Source current ACT = GND Tx/Rx Logic high input Logic low input Source current Sink current ACT = GND TxD/RxD Source current in standby and ACT = GND transmit mode Sink current in standby and ACT = GND transmit mode Transmit to receive transition time Receive to transmit transition time Bit rate Document Number 81218 Rev. 1.0, 16-Nov-05 SYMBOL MIN TYP. MAX UNIT VCC Ta 2.6 0 3.3 + 25 3.5 + 50 V C Ishdn 0.1 A Twa 20 s Tr Tf Cin 8 8 1000 1000 10 ns ns PF Vih act Vil act Isi_act Isrc_act Vcc - 0.8 GND Vcc 0.8 50 1 V V A A Vih tr Vil tr Isrc_tr Vcc - 0.8 GND Isi_shdn Vcc 0.8 1 1 V V A A Isrc_shdn 1 A Isi_shdn 1 A 24 Tt_to_r 2.5 s Tr_to_t 2.5 s For more information please contact: RFTransceivers@vishay.com 3 Mb/s www.vishay.com 3 RFW322-M Vishay RFWaves RECEIVER CHARACTERISTICS TA = 25 C, VCC = 2.7 V to 3.3 V, unless otherwise specified. PARAMETER TEST CONDITIONS Signal acquisition time Sensitivity at BER = 10 -3 SYMBOL TYP. MAX UNIT Tacq MIN 1.2 1.5 s Sens - 73 - 70 dBm peak RxD Output voltage high 1 mA load sync current RxDVH Vcc - 0.8 Vcc V Output voltage low 1 mA load source current RxDVL 0 0.8 V 10 pF Output capacitance Cout Pulse length Tpw Bit rate = 3 Mb/s Current consumption RF power at antenna port < - 40 dBm peak ns Is 34 mA Emission level between 30 MHz and 1 GHz - 57 dBm Emission level between 1 GHz and 12.75 GHz - 47 dBm RSSI Allowed source current Isrc RS 50 nA Allowed sink current Isi_RS 50 nA Allowed load capacitance CIo RS 20 pf Output voltage V_SAT Voltage to received power slope V to P 0.4 1.2 6 V mV / dB TRANSMITTER CHARACTERISTICS T = 25 C, VCC = 2.7 V to 3.3 V, unless otherwise specified. PARAMETER TEST CONDITIONS SYMBOL MIN TYP. Poutmax 2 6 Logic high input Vih d Vcc - 0.8 Vcc V Logic low input Vil d GND 0.8 V Source current Isrc_di 1 A Sink current Isi_di 1 A Pulse length Tdil Transmit power peak MAX UNIT dBm TxD Not limited ns Is 34 mA Isnd 7 mA at - 10 dBc BW 30 at RBW = 1 MHz; at VBW = 1 MHz Spur Current consumption Bit rate = 3 Mb/s Current consumption - No data transmitted TxD/RxD = 0 Bandwidth Out of band spurious (> 1 GHz)(2) 20 (1) MHz - 20 dBm Time from data into output power Td 400 450 500 ns Central frequency Cf 2.439 2.440 2.441 GHz (1) When transmitting a uniform distribution of `1' and `0' bits. This assupmtion is not relevant in 3 Mbps! (2) Depends on test platform. www.vishay.com 4 For more information please contact: RFTransceivers@vishay.com Document Number 81218 Rev. 1.0, 16-Nov-05 RFW322-M Vishay RFWaves FOOTPRINT The following diagram shows the physical footprint of the RFW322-M module, which should be implemented. 3.1 ***Note: The pcb area under the module (CS layer only) must be considered as void and not include any conducting metal. 3 2 1 1.6 4 0.9 4.1 4 4 Pad Dimensions 5 3.3 1.4 12 0.2 1.7 11 8.3 4 1.3 1.3 10 2.2 6 1.1 7 2.8 8 9 7 5.4 0.9 19580 Footprint **All figures are in mm units. Measurements are taken from the middle of the solder pads. NOTICE Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone one its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, Document Number 81218 Rev. 1.0, 16-Nov-05 relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. For more information please contact: RFTransceivers@vishay.com www.vishay.com 5 Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1