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FSK / ASK 315 MHz transmitter circuit

2016-04-10 03:33  
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FSK / ASK 315 MHz transmitter circuit
72015 is a FSK / ASK transmitter designed for the applications of 315 MHz ISM band. It is compliance with EN 300 220 and similar standards. And it can be applied to keyless entry systems, remote control / telemetry systems, data communications systems and security and other systems. The main technical features are as follows: It has fully integrated and stable PLL; Operating frequency is 290 ~ 350 MHz;It has single-ended RF output; Modulation rate caused by crystal pulling of FSK is from DC ~ 40 Kb / s; AS achieves turn on / off keying, which modulates by internal power amplifier. And ASK modulation rate is 40 Kb / s;Supply voltage is within l.9 ~ 5.5 V; It has a low voltage detector; Operating current is adjustable within 3.5 ~ 10.7 mA and standby current is 0.1μA; Output power is adjustable within -12 ~ +8.5 dBm.