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RF2945

RF Micro Devices
Part Number RF2945
Manufacturer RF Micro Devices
Description 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER
Published Apr 16, 2005
Detailed Description RF2945 11 Typical Applications • Wireless Meter Reading • Keyless Entry Systems • 433, 868 and 915MHz ISM Band Systems •...
Datasheet PDF File RF2945 PDF File

RF2945
RF2945

Overview
RF2945 11 Typical Applications • Wireless Meter Reading • Keyless Entry Systems • 433, 868 and 915MHz ISM Band Systems • Wireless Data Transceiver • Wireless Security Systems • Battery-Powered Portable Devices 433/868/915MHZ FSK/ASK/OOK TRANSCEIVER Product Description The RF2945 is a monolithic integrated circuit intended for use as a low cost FM transceiver.
The device is provided in 32-lead plastic LQFP packaging and is designed to be used with a PLL IC to provide a fully functional FM transceiver.
The chip is intended for digital (ASK, FSK, OOK) applications in the North American 915MHz ISM band and European 433/868MHz ISM bands.
The integrated VCO has a buffered output to feed the RF signal back to the PLL IC to form the frequency synthesizer.
Internal decoding of the RX ENABL and TX ENABL lines allow for half duplex operation as well as turning on the VCO to give the synthesizer time to settle and complete power downmode.
The DATA REF line allows the use of an external capacitor to control the DC level at the adaptive Data Slicer input for setting the bit decision threshold.
Optimum Technology Matching® Applied 7.
00 + 0.
20 sq.
0.
15 0.
05 -A- 0.
50 0.
22 + 0.
05 1.
40 + 0.
05 Dimensions in mm.
5.
00 + 0.
10 sq.
7° MAX 0° MIN 0.
60 + 0.
15 0.
10 0.
127 ü Package Style: LQFP-32_5x5 Si BJT Si Bi-CMOS RX ENABL LVLADJ GaAs HBT SiGe HBT DATA OUT VCO OUT GaAs MESFET Si CMOS RESNTR+ Features • Fully Monolithic Integrated Transceiver • 2.
4V to 5.
0V Supply Voltage • Narrowband and Wideband FSK • 300MHz to 1000MHz Frequency Range • 10dB Cascaded Noise Figure • 10mW Output Power With Power Control 11 TRANSCEIVERS 32 31 30 29 28 27 GND4 VCC3 VCC1 26 25 TX ENABL 1 Control Logic Gain Control 24 RESNTR- TX OUT GND2 RX IN GND1 LNA OUT GND3 MIX IN 2 3 4 5 6 7 8 PA 23 22 MOD IN DATA REF 21 DEMOD IN 20 GND6 19 IF2 BPLinear RSSI LNA 18 17 IF2 BP+ IF2 IN Ordering Information RF2945 RF2945 PCBA-L RF2945 PCBA-M RF2945 PCBA-H 433/868/915MHz FSK/ASK/OOK Transceiv...


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