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ADAU1962A Pop-up noise after Power-ON

SigmaDSP & SigmaStudio RameshMarisa over 3 years ago 4 replies Original on forum ↗
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RameshMarisa Question
over 3 years ago

Dear Team,

Initially pop-up noise is observed at ADAU1962A DAC output after enabling Master Power-Up bit of PLL_CLK_CTRL0

register. Please find the attachment for ADAU1962A configuration code.

Could you please share the your feedback on this issue.

Hardware: ADSP-SC589 EZKit

Tools: CCES 2.7.0

DaveThib Reply
May 24, 2018 00:00

Hello RameshMarisa,

I will assume you are waiting for the power supplies to all come up and be stable before turning on the master power up?

The cause of this is most likely the hardware design. Can you put up the schematic of the DAC output circuits?

Dave T

RameshMarisa Reply
May 28, 2018 00:00

Dear DaveThib

Thank you for support

Yes. ADAU1962a DAC is enabled after power supplies stable only. Please find the attachment for DAC output circuits.

RameshMarisa Reply
Jun 6, 2018 00:00

Dear DaveThib,

Kindly share your feedback on this issue.

RameshMarisa Reply
Jun 11, 2018 00:00

Dear Team,

Could you please share the your feedback on this issue.