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LM4970: LM4970 Max input audio

Part Number: LM4970
Other Parts Discussed in Thread: TPA2028D1, TPA2029D1, TPA2015D1

Hello,

I am working with LM4970 and I have connected MIC to it, but the LED intensity is less due to Low MIC output. So i am planning to use AGC audio amplifier, so can anyone tell me what is the max input I can give to LM4970 at audio input?

Also can any one suggest me which kind of amplifier is preferable for interacing MIC with LM4970?