ASK 440～310MHz Emitter Circuit Diagram

Published:2011/6/19 7:26:00 Author:Vicky | Keyword: ASK 440～310MHz Emitter | From:SeekIC

U2745B is a PPL emitter chips specially designed for low-cost data communication, which is available for application in wireless temperature measuring, keyless keyboard, gate lock, light, fan, air-conditioner, shutter control and other consumer products. Main technical features are as follows: 　　·Emitter frequency: 310～440 MHz; 　　·ASK modulation mode; 　　·Voltge of power supply: 2.2～4 V; 　　·Maximum output power: 5 dBm(Vs=3 V，f=433．92 MHz，RPWRSET=l．2 kΩ); 　　·Maximum power dissipation: 250 mW; 　　·Maximum work current: l2.5 mA，maximum current udner low-power dissipation mode 10μA； 　　·Maximum data transfer rate: 20 Kb／s; 　　·Microprocessor clock signal ,which can be compatible with microcontroller such as M44C090 and M44C890; ·ESD protection (excluding pins XT02 and XT01)as requested by MIL-STD．883(4KV HBM); ·Work temperature: -20～+70℃.



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