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sigma-delta ADC linearity (Read 1792 times)
jcpu2006
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Hsinchu
sigma-delta ADC linearity
Mar 23rd, 2006, 8:18pm  
Hello:

I have a audio sigma-delta ADC,
when input =1Vpp, dynamic range > 80dB,
when input < 1mV, noise floor < -80dBV

Bt when input~10mVpp,
we have 2nd, 3rd, 4ht ...harmonics about -60dBV

Does anyone solve similar problem before?   Huh
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