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RX1-151.300-10 Datasheet(PDF) 3 Page - Radiometrix Ltd |
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RX1-151.300-10 Datasheet(HTML) 3 Page - Radiometrix Ltd |
3 / 19 page Radiometrix Ltd., TX1 & RX1 Data Sheet page 3 RX1 receiver Bandpass filter x2 7kHz LPF Supply regulator 3 RF gnd 1 RF in 2 RF gnd 4 En 7 Vcc 6 0V Preamp. Mixer Bandpass filter Xtal osc/mult. IF1 IF2 IF amplification / filtering FM discriminator Regulated Rx supply 5 RSSI 9 RXD 8 AF out AF buffer Adaptive data slicer 10k En (pin 4) Rx enable. ≤0.15V on this pin disables module (current <1µA), ≥1.7V enables module. Input impedance 1M Ω approx. Observe slew rate requirements (see applications notes). RSSI (pin 5) Received Signal Strength Indicator with >80dB range. See applications notes for typical characteristics. 0V (pin 6) DC supply ground. Internally connected to pins 2, 3 and module screen. Vcc (pin 7) DC +ve supply. Max ripple content 0.1VP-P. Decoupling is not generally required. AF out (pin 8) Buffered and filtered analogue output from the FM demodulator. It has a standing DC bias of 1V and 400mVP-P baseband signal. Useful as a test point or to drive external decoders (see applications notes). External load should be >1k Ω // <100pF. RXD (pin 9) Digital output from internal data slicer (squared version of the signal on pin 8). It may be used to drive external decoders. The data is true data, i.e. as fed to the transmitter. Output is “open-collector” format with internal 10k Ω pullup to Vcc (pin 7). Pin description RF in (pin 1) 50 Ω RF input from antenna. Internally DC-isolated. See antenna section of applications notes for suggested antennas and feeds. RF gnd (pins 2 & 3) RF ground, internally connected to the module screen and pin 6 (0V). These pins should be directly connected to the RF return path - e.g. coax braid, main PCB ground plane etc. Fig.3: RX1 block diagram Fig.4: RX1 physical dimensions 9 holes of 0.7 mm dia. pin spacing 2.54mm 12 3 48 mm PCB level Radiometrix RX1 45 6 7 9 8 25.4 mm pin spacing: 2.54 mm 1 = RF in 2 = RF gnd 3 = RF gnd 4 = En 5 = RSSI 6 = 0V 7 = Vcc 8 = AF out 9 = RXD 5.5 mm |
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