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OPA1642 搭建的耳放电路TINA仿真失真

Other Parts Discussed in Thread: OPA1642, OPA1622

大家好。我使用OPA1642+OPA1622搭建了一个简单耳放电路,OPA1642接电流输出型dac作IV转换,OPA1622作差分运放接耳机负载。我发现音频段内所有频率都会有很大的失真,不知道问题出在哪里,还请工程师帮忙看一下。

OPA1642 IV电路.TSC