Published:2011/6/10 1:30:00 Author:Seven | Keyword: sound circuit | From:SeekIC
This circuit is from Changhong C2191, which is of OTL dual-channel connectionPin functions and reference voltage of TDA1521:1-pin:11v----backward input(L channel signal input);2-pin:11v----forward input 1;3-pin:11v----reference 1(it's 0v when it is in OCL connection, and it's 1/2Vcc when it's in OTL connection );4-pin:11v----ouput 1(L channel signal output);5-pin:0v----negative power supply input(it connects with the earth when it is in OTL connection ); 6-pin:11v----output 2(R channel signal output);7-pin:22v----positive power supply input; 8-pin:11v----positive input
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