请TI的大神推荐一款低噪声的运放,主要应用在音频前端,差分音频合成单端的,性价比高一些。
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OPA161x这款,有单通道OPA1611,和双通道OPA1612两款,40Mhz带宽,Ultralow Noise: 1.1 nV/√Hz at 1 kHz噪声。非常适用于音频上的应用,可以看下它的数据手册。