Other Parts Discussed in Thread: TPA3251, TPA3255
PCM5121 看描述不需要加隔直电容,这是不是也分具体场景,比如和TPA3251 一起用是不是必须得加隔真,偏置电压不一样
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是的,对于您说的这个场景确实有可能需要,比如它的输出与TPA3251 要求的输入不匹配。
这个类似伪差分,有可能是会引入的,你那边可以仿真下。