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cs 4398 dac noise levels differs between channels

cs 4398 dac noise levels differs between channels

My CS4398 dac is very noisy. One channel is ok (a lot more noise then other dacs, but that is probably a characteristic the CS4398). The other channel is very noisy. I can hear a pulsating noise.



I use it with differential output. I wanted to use it with digital volume control, but that's not possible. Too much noise. I now use it with a voltage divider between DAC and amp (U-pad R1=10k, R2=2.7K). So the impedance the DAC sees should be high enough.



What can cause this? Is the chip damaged?
Hi.
It might be that the chip is damaged. The cs4398 chip is quite fragile when used without any output stage.

Contact us directly for further assistance.
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