Tape recorders remote volume control circuit composed of LC2200

Published:2011/4/22 1:18:00 Author:Rebekka | Keyword: Tape recorders remote volume control | From:SeekIC

LC2190/2200 remote encoding transmitter / receiver is improved LC219/220A ASIC. It has the decoding and error identification repeated comparisons, so you can effectively prevent the error action. LC2190 shape pin map. LC2200 shape pin map. LC219 internal block diagram. LC2200A internal block diagram. Main electrical parametersThe work oscillation frequency of LC2190 transmitter chip is 80kHz; Input duty cycle is 1:1, f = 40kHz square wave pulse; Repetition rate between output pulse train is decided by the the capacitors of CT end. It usually is 3 ~ 5Hz; Operating voltage range is 2.5 ~ 3.5V, typical value is +3 V; Quiescent power supply current is less than 1μA. The output can drive the power transistor to gain the large emission current. LC2200 receiver chip supply voltage range is 3 ~ 9v, typical value is +5 V; Quiescent supply current is less than 5μV; Each output drive current IoH ≥ 2mA, 10L ≥ 1mA. It can directly drive NPN transistor, LED and low power SCR. Infrared transmitter circuit composed of LC2190. Continuous key turns to a single-button circuit. Remote control circuit included in the volume composed of LC2200.



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