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AD7661 S/(N+D) with input level

Question asked by mantow on Jul 27, 2014
Latest reply on Aug 5, 2014 by jcolao



I'd like to ask if there is a typo for the S/(N+D) spec in the datasheet of the AD7661 ADC ?

In Table 2, the typical value is 89.3 dB for -0.5 dBFS while the typical value is 30 dB for -60 dB input.

However, in Fig. 16, the S/(N+D) value is shown to be almost constant down to -60 dB input.

If I'm not misreading the datasheet, can someone tell me which value is actually correct ?


Best regards