DS90UB921-Q1: IDX, MODE pin 0.1uf capacitor

Dongbao Zhou

Expert 4180 points

Part Number: DS90UB921-Q1
Other Parts Discussed in Thread: DS90UB964-Q1

Hello,

What's the function of below 0.1uF capacitor? For noise filtering? Can we leave it unpopulated?

Dongbao

over 8 years ago

0 Kenichiro over 8 years ago

Mastermind 9165 points

Hi Dongbao,

Just for your information. I have posted quite similar query with you and waiting for feedback from TI.
This can be referenced for you as well.

DS90UB964-Q1: MODE pin and IDx pin
e2e.ti.com/.../648981

Thanks,
Ken

0 Steven(Shenzhen) Shi over 8 years ago

TI__Mastermind 30515 points

Yes, you are correct. this capacitor is helpful to reject noise, including power/gnd, and emi/emc etc.

best regards,
Steven

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DS90UB921-Q1: IDX, MODE pin 0.1uf capacitor