INA240: Test wave oscillation

Rhea Gao

Expert 2580 points

Part Number: INA240

Hi,

The customer uses INA240 to test the waveform and there is some oscillation, please help to check.

The detailed content and design are in the attached document.

INA240A1DR test problem log.doc

Thanks~

over 1 year ago

0 Guang Zhou over 1 year ago

TI__Mastermind 34240 points

Hi,

These are primarily due to common mode voltage switching. They can not be completely eliminated but can generally be reduced by optimizing placement and layout. Probe techniques can sometimes influence the waveform as well.

Regards, Guang

0 Rhea Gao over 1 year ago in reply to Guang Zhou

Expert 2580 points

Hi Guang Zhou,

Please help to check whether the placement and layout are OK? Any modification suggestions to reduce.

Thank you~

0 Guang Zhou over 1 year ago in reply to Rhea Gao

TI__Mastermind 34240 points

Hi,

Please refer to this reference design to see if it is helpful in your own endeavor.

Regards, Guang

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INA240: Test wave oscillation