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Other Parts Discussed in Thread: OPA2337, LME49721, LME49726

Customer used OPA2337 ,SOT23-8 for audio application,and faced very poor preformance,high noise.

Is the LM49726 is the best recomended solution? any  other solution?

  • Hi Eli,

    Are there any other specifications that are critical for the customer besides the noise spec?

    Also, is the op amp used as just a standard gain block?

    The two ICs that both have much lower noise than the OPA2337 and run off of 3V or 5V rails from audio are the LME49726 and the LME49721.

    The 726 has more current drive, but the 721 has wider bandwidth, both are low distortion. Their noise specs are 6.9nV/rtHz and 4nV/rtHz, respectively.

    Best Regards,