LSF0204D: What's about Vrefa=Vrefb?

Phil Yi

Part Number: LSF0204D

Dear Device experts:

We have no questions about different level translation; but what's about same level it means Vrefa=Vrefb? We do have this option for EVM design.

Thanks!

Phil

over 6 years ago

0 ShreyasRao over 6 years ago

TI__Guru 62180 points

Hi Phil,

The recommendation from our side, which is also mentioned in the datasheet is that the VrefB must be atleast 0.8V higher than VrefA.
With both voltage being same, the biasing is not set correctly leading to clamping of the signal to about 1V below the expected value.
You could refer to the app note:
www.tij.co.jp/.../scea060.pdf

Logic

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LSF0204D: What's about Vrefa=Vrefb?