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QMR2 Datasheet(PDF) 3 Page - rfsolutions.ltd |
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QMR2 Datasheet(HTML) 3 Page - rfsolutions.ltd |
3 / 8 page Ds302_3 AUG 01 © ©2001 REG No 277 4001 England Page 3 QM Receiver Module QMR1 / QMR2 QMR1 Details QMR1 1 2 3 4 5 6 7 Figure 1: QMR1 Receiver Pin Description: Vcc ( PIN 1 ) +Ve supply pin. Operation from a 5V supply able to source 2mA at less than 10mVP-P ripple. GND ( PIN 2 ) Supply ground connection, preferably connected to a solid ground plane. RF IN ( PIN 3 ) 50 Ω RF input from antenna, connect using shortest possible route. Capacitively isolated from internal circuit. UNCONNECTED ( PINS 4 & 5 ) Extra SIL pins for additional mechanical retention. RSSI ( PIN 6 ) Test output providing a voltage that is proportional to the level of the RF input on pin 3. DATA OUT ( PIN 7 ) CMOS compatible output. This may be used to drive external decoders. Note: sink/source capability is limited to 20 µA. General Information Phase Lock Loop RF AMP Band Pass Filter IF AMP Low Pass Filter Detector Antenna Mixer Figure 2: Receiver Block Diagram The receiver module is a quasi AM /FM (QM) superhet receiver capable of handling data rates of up to 10Kbits/s. With an on board data buffer and phase locked loop a –110 dBm sensitivity is achieved. Utilising the quasi AM/FM modulation technique and the latest phase locked loop receiver technology with one of the compatible transmitter modules will yield a highly efficient wireless link. Note: Because of the way Quasi Modulation operates the QMR1 and the QFMT1 will not work reliably in close proximity to each other. RSSI Values RF Level (dBm) pin 3 RSSI (volts) pin 6 -110 2.12 -100 2.21 -90 2.31 -80 2.46 -70 2.62 -60 2.80 -50 2.91 -40 2.97 -30 3.00 -20 3.03 -10 2.88 |
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Similar Description - QMR2 |
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