PCM1804: The noise is very large, needs to review schematic

Dillen Chen

Intellectual 2140 points

Part Number: PCM1804

Hi Team,

The noise is very large, please help to see if there is a problem with the schematic design

SCHEMATIC1 _ 07 ADC_PCM1804.pdf

Thanks.

over 1 year ago

0 Daveon Douglas over 1 year ago

TI__Genius 16130 points

Hi,

Our ADC expert is out of office until Monday the 28th, please be patient as responses are delayed.

Regards

0 Sanjay Dixit over 1 year ago in reply to Daveon Douglas

TI__Mastermind 23030 points

Please apply a 0.5v 1Khz sine wave signal and with an oscilloscope check the Waveform at the Vin + and Vin - pins of the Device. The signal should be clean on both pins. It should have a DC Level equal to VCOM

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PCM1804: The noise is very large, needs to review schematic