TS3DV642: ac coupling of AUX channel

Roy Hsu

Part Number: TS3DV642

Hi Team,

I'd like to know if it's OK to move the AUX ac caps from the blue circle to the purple circles (ac coupling at the connectors instead)?

Thanks!

Roy

over 2 years ago

+1 David (ASIC) Liu over 2 years ago

TI__Guru**** 177396 points

Roy

You can move the AC coupling capacitors from the common port to Port A or B. But the capacitors has to be placed between the TS3DV642 and the pullup and pulldown resistor as shown below.

Also when moving the capacitors to Port A or B, the TS3DV642 common mode voltage is set by the graphic controller and not by the pullup/pulldown resistor. Please make sure the graphic controller common mode voltage meets the TS3DV642 requirement.

Thanks

David

0 Roy Hsu over 2 years ago in reply to David (ASIC) Liu

TI__Genius 9390 points

Thanks, David.

What's the common mode voltage requirement of the TS3DV642? Is it 0 ~ 5.5V?

Thanks!

Roy

0 David (ASIC) Liu over 2 years ago in reply to Roy Hsu

TI__Guru**** 177396 points

Roy

Common mode voltage will be 0 to 3.6V.

Thanks

David

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TS3DV642: ac coupling of AUX channel