正使用INA1620进行设计,音源是PCM2912A,连接INA1620时,是否需要进行单端转差分的设计?有的建议IN-接电容到AGND,IN+接输入,这样接是否正确?还是反过来接。
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单端输入的话,使用IN+ 或IN- 都可以,或者说IN+或者IN- 接电容到地也都可以。