4558 、 5532 做输入差分,噪音抑制。
用哪个好?
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是打算给TPA3118 做差分输入是吗?那这两款运放都不是差分输出。可以考虑OPA1632。
那相比RC4558的话,还是建议选择NE5532, 因为它的低噪音,低失真,输入有二极管保护,输出短路保护的高性能特点,更适合用在audio应用上面。