DS90UB960-Q1: POC

Zehui Li

Hi,

What if I add another PI filter between voltage regulator and POC circuit? Will it have a better or worse performance or have no influence?

over 2 years ago

0 Casey McCrea over 2 years ago

TI__Guru** 103215 points

Zehui,

This question is difficult to answer because it could depend on many factors of the design. But in general, it is best to provide a low-noise input to the PoC circuit in order to improve noise performance as much as possible. So if your PI filter helps to improve noise at the PoC input, then it should help. It is not explicitly required

Best Regards,

Casey

0 Zehui Li over 2 years ago in reply to Casey McCrea

Intellectual 540 points

Hi Casey,

Is there any condition on which the additional PI filter may cause a bad influence?

0 Casey McCrea over 2 years ago in reply to Zehui Li

TI__Guru** 103215 points

Zehui,

If the PI filter increases noise by creating resonance then it could decrease performance. But I have not experienced such an issue so far in our customer applications

Best Regards,

Casey

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DS90UB960-Q1: POC