TUSB542: TUSB542 AC Coupling Capacitors

Hisen Zhang

Prodigy 615 points

Part Number: TUSB542

Hi All

I would like to ask why we need to add a AC coupling capacitor.

What is benefit that we need to add this.

I guess one reason is to isolate the DC voltage from IC. Is there any other consideration to add this AC coupling cap.

Thanks!

over 7 years ago

0 Michael.Walker over 7 years ago

TI__Mastermind 19720 points

The AC coupling capacitors are to block DC voltage so that the receiver of the device has the correct common mode. The AC caps are required the only consideration should be that they are all 100 nF and be a 0603 or 0402 size.

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TUSB542: TUSB542 AC Coupling Capacitors