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运放出来都不是想要的倍数 线性度也不好

Other Parts Discussed in Thread: LMV358, OPA735

输入差不多 20到100mv左右    20khz      输出想在1v到4.0v之间,用的 里面lmv358

但是最高就知道2.9v就上不去了    电源用5v单电源供电,是电路 有没有适合的电路