ADS5263 PD mode

NAOKI AOYAMA

Guru 11215 points

Other Parts Discussed in Thread: ADS5263

Hello,

My customer uses the ADS5263 and has a question.

When PD mode on, it remain a voltage 1.47V at the analog input pins.

Is it a right operation?

My customer expects 0V at the analog input pins when PD mode on.

Regards,

Naoki Aoyama

over 11 years ago

0 Christian Yots over 11 years ago

TI__Genius 14540 points

Hi,

Both the PDN pin and the GLOBAL_PDN spi field power down the ADC core circuitry and the LVDS output buffers. However, the bias generating circuit that provides the VCM voltage is not powered down, and, therefore, ~1.47V will always be observed on these inputs. I have confirmed the same on the ADS5263 EVM.

Regards,

Christian

0 NAOKI AOYAMA over 11 years ago in reply to Christian Yots

Guru 11215 points

Hi Christian,

Thank you very much for your fast reply.

I will feedback to my customer the information.

Thanks

Naoki

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ADS5263 PD mode