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AD74111 ADC/DAC digital code

Question asked by sss on Mar 18, 2016
Latest reply on Mar 25, 2016 by DaveThib

Hi all,

 

Our customer will start to design the circuit with AD74111.

Please let me know if my understanding is correct.

 

Q1.

Both DAC & ADC,

0dBFS = 0.5 V rms/1.414 V p-p ?

 

Q2

ADC output digital code,

000001 = –1 dBFS is 1.414 V p-p * 0.891 = 1.26 Vp-p ?

(-1dB = *0.891)

 

Q3.

DAC input digital code,

0000000001 = (1023/1024) dBFS is 1.414 V p-p * (1023/1024) = 1.4126 Vp-p ?

 

Best regards,

sss

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