OPT3101: Signal interference problem

Rhea Gao

Part Number: OPT3101

Hi，

I have a client using OPT3101 who found 4db interference to GPS signal during testing.

What problems should be paid attention to in wiring? The customer has "refer to opt3101 System Design Document". What other documents can you refer to?

The attachment is the client's schematic design and layout,please help to review.

OTP3101-B.pdf gerber_F205_TOF_V01-B01.zip

Many thanks~

over 2 years ago

0 Brent Elliott over 2 years ago

TI__Expert 6800 points

Hi Rhea,

Let me take a look at this and I will get back this week.

Thank you,

Brent Elliott

0 Rhea Gao over 2 years ago in reply to Brent Elliott

Expert 2580 points

Hi Brent，

Do you have any updated answers？

0 Brent Elliott over 2 years ago in reply to Rhea Gao

TI__Expert 6800 points

Hi Rhea,

Is this document the one that you said the customer has already referred to? If not, this includes a lot of information on EMI shielding.

Has the customer tested the raw and calibrated crosstalk amplitude and compared it to the recommended crosstalk levels? The information on calibration and recommended crosstalk amplitude can be found here.

Let me know if any of these suggestions help.

Thank you,

Brent Elliott

0 Brent Elliott over 2 years ago in reply to Rhea Gao

TI__Expert 6800 points

Hi Rhea,

Locking this thread since it has been a month since last reply. Please create a new thread if you have further questions.

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OPT3101: Signal interference problem