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Audio mic AGC circuit before codec

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ahgu

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audio agc circuit

Does anyone has a simple yet effective AGC for MIC amplification before the signal goes to the codec?

I don't want the signal to saturate, but amplify about 30-40dB if possible for weak signals.

thanks
ahgu
 

ME

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mic agc

You can use the SSM2165, SSM2166 or SSM2167 Microphone Preamplifier with Variable Compression and Noise Gating from Analog Devices.
 

usbman

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simple agc circuit

ahgu said:
Does anyone has a simple yet effective AGC for MIC amplification before the signal goes to the codec?

I don't want the signal to saturate, but amplify about 30-40dB if possible for weak signals.

thanks
ahgu
you may check the INA163 datasheet form BurrBrown/TI. The datasheet
contains some mic examples, but no AGC.

usbman
 

ME

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microphone agc

There is no compressor function in the circuit you linked to Hishamsaleh.
 

ahgu

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microphone agc circuit

I found one, working very nice.
 

nyk

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Can u post that circuit that worked for you? PLz... ahgu
 

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