I made a simple PCM2704 dac, it worked but there is a serious problem, i can hear a buzz sound that that's very annoying. Then i plug it in my QA400 and here is the result:
The DAC connect to QA400 with 10kohm load, no signal playing, that buzz is clearly visible at around 9khz and 18khz
Dac playing -2.5dbfs
I have attached the schematic and board file in eagle format, hope some one can help me to find out the problem.
The DAC connect to QA400 with 10kohm load, no signal playing, that buzz is clearly visible at around 9khz and 18khz
Dac playing -2.5dbfs
I have attached the schematic and board file in eagle format, hope some one can help me to find out the problem.
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