DR4100
DR4100 is 433.92 MHz Transmitter Module manufactured by RF Monolithics.
Description
The TX IN pin is connected to the transmitter TXMOD pin through a 4.7 K resistor on the circuit board. Additional series resistance will often be required between the modulation source and the TX IN pin, depending on the desired output power and peak modulation voltage (3.3 K typical for a peak modulation voltage of 3 volts). Saturated output power requires about 450 µA of drive current. Peak output power PO for a 3 Vdc supply is approximately:
TX IN
PO = 4.8- ((VTXH
- 0.9)/(RM + 4.7))2, where PO is in m W, peak modulation voltage VTXH is in volts and external modulation resistor RM is in kilohms This pin must be held low in the receive and sleep modes. Please refer to section 2.9 of the ASH Transceiver Designer's Guide for additional information.
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6, 7 8
9 10
GND NC
VCC GND This is the positive supply voltage pin for the module. The operating voltage range is 2.7 to 3.5 Vdc. It is also possible to...
