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ADAU1701 noisy sine waves

Question asked by Dan_GasData on Oct 3, 2014
Latest reply on Oct 20, 2014 by Dan_GasData

I have an ADAU1701 on a mini-eval board. When I tell it to generate a sine wave, or read in a sine wave and put it straight back out via one of the DACs, the output is very noisy.

 

Does anybody know why this might be? I'm generating a 1kHz signal and when I use an externally generated signal its 1kHz and about 1 Vpp.

 

I had expected that an audio chip would have no problem working with a sine wave.

 

Dan

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