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LMV1012: when work with MIC, there is a lot of ground noise.

Prodigy 130 points

Replies: 2

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Part Number: LMV1012

Dear TIs,

when we use LMV1012-15 as a MIC signal amplifier as attachment? it come out a big groud noise, could you kindly help to tell us why? how to aviod this issue?

thanks a lot!Click here to play this audio clipClick here to play this audio clip

电路图.pdf

2 Replies

  • Hello Ryan,

    I have reviewed the schematic and have a couple of questions.
    Is Term1 connected to Vdd and Term2 to GND? and Where are you getting the output signal?

    Best Regards
    José Luis Figueroa
    Audio applications Engineer
  • In reply to José Luis:

    Dear José

    Term1 output will be used as datasheet with res/CAP, term2 is connected to GND. we get the output at term1.
    thanks a lot!

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