AnsweredAssumed Answered

ADAU1701 max ratings/protection on adc

Question asked by v!ta on Oct 9, 2015
Latest reply on Oct 10, 2015 by KJBob

Dear all,

 

i'm using the adau 1701 with an 18k external serial resistor for the build in ADC, resulting in a 2V RMS input to the specified 100µA input fullscale. What happens if i would give more than 2V RMS in, besides clipping?

is there a built in protection, or could a higher voltage (current >100µA) cause damage to the ADAU?

 

my suggestion would be then two z-diodes (2,7V) in antiserial connection then parallel to the input to have a voltage limiter...

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