TUSB8020B: Necessity of DC Blocking Capacitors in SS Tx lines

Selvaraj Karuppusamy

Part Number: TUSB8020B

Hi,

Is it necessary to add DC Blocking capcitors in SS lines connecting the application Processor and TUSB8020B Upstream facing port in same PCB ? Please Clarify regarding this.

over 6 years ago

0 Malik Barton57 over 6 years ago

TI__Guru 64326 points

Hi,

It is necessary to have this capacitance on the SSTX lines via USB Spec. Is there a issue including this capacitance in your application?

0 Selvaraj Karuppusamy over 6 years ago in reply to Malik Barton57

Intellectual 425 points

Hi,

If USB connector is used then this DC blocking capacitor needs to be added near Tx lines of connector. Here the Processor & TUSB8020B as in same PCB. Please tell me if this DC blocking capacitors needed or not?

0 Malik Barton57 over 6 years ago in reply to Selvaraj Karuppusamy

TI__Guru 64326 points

Hi,

The DC blocking capacitors are still needed in this case.

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TUSB8020B: Necessity of DC Blocking Capacitors in SS Tx lines