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T5-434-3V Datasheet(PDF) 2 Page - rfsolutions.ltd |
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T5-434-3V Datasheet(HTML) 2 Page - rfsolutions.ltd |
2 / 8 page FM Radio Transmitter & Receiver Modules T5 / R5 DS305-8 Nov ‘05 ©2005 REG No 277 4001, England. Page 2 Connection Diagram T5 12 3 4 5 Figure 1: Transmitter Pin Descriptions: RF GND (pin 1) RF ground pin, internally connected to pin 4 (0V). This pin should ideally be connected to the nearest ground plane (e.g. coax braid, main PCB ground plane etc.) RF OUT (pin2) 50 Ω RF antenna output. To achieve best results the antenna impedance must match that of the module. VCC (pin 3) +Ve supply pin (3.0 to 9.0 volts). The module will generate RF when VCC is present. It is strongly recommended that a 100nF capacitor decouples the supply rail as close as possible to this pin. GND (pin 4) Supply and data ground connection, connected to pin 1. Data IN (pin 5) This input has an impedance of 47K Ω and should ideally be driven by a CMOS logic drive or compatible. The drive circuitry should be supplied with the same supply voltage as the Tx module. Ordering Information: Part No Description T5-434-9-20 Tx 433.92MHz 9v 20Kbps T5-434-5V Tx 433.92MHz 5v 128Kbps T5-434-5-20B Tx 433.92MHz 5v 20Kbps ‘B part’ T5-434-3V Tx 433.92MHz 3v 50Kbps T5-434-3-20B Tx 433.92MHz 3v 20Kbps ‘B part’ Figure 2: Receiver RF IN (pin 1) 50Ω RF input from antenna, connect using shortest possible route. This input is isolated from the internal circuit using the air gap of the front end SAW RF filter RF GND (pin 2) RF ground connection, preferable connected to a solid plane. RSSI (pin 3) The Received Signal Strength Indicator provides a DC output voltage proportional to the RF input signal. The amplitude of the RSSI voltage increases with increasing RF signal strength. GND (pin 4) Connect to power supply ground. VCC (pin 5) +Ve supply pin. Operation from a 5V supply able to source6mA at less than Vp-p ripple. AF (pin 6) Audio frequency output. DATA OUT (pin 7) CMOS compatible output. This may be used to drive external decoders. To reduce any noise on this output ass a Add a 56pF cap from this pin to GND. Part No Description R5-434-5-20 Rx 433.92MHz 20Kbps R5-434-5-20B Rx 433.92MHz 20Kbps ‘B part’ R5-434-5-50 Rx 433.92MHz 5V 50Kbps R5-434-5-50B Rx 433.92MHz 5V 50Kbps ‘B part’ R5-434-5-128 Rx 433.92MHz 5V 128Kbps R 5 12 3 4 56 7 |
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