OPA4134 termination of unused pin

masahiko shimizu

Other Parts Discussed in Thread: OPA4134

My cuatomer is using OPA4134.
He has a question.

He think termination of unused pin as an attached file.
Is there a problem?

Thanks
Shimizu

termination of unused pin.pptx

over 9 years ago

0 Matthew Beardsworth over 9 years ago

TI__Genius 9175 points

Hi Shimizu,

Connecting the pins as shown is ok. It is a unity gain buffer with the input grounded. This keeps the unused op-amp from floating so it will not contribute any noise to the system. It is a simple way to hold the output at ground and force the gain to be unity as compared to leaving the op-amp floating with open loop gain.

Regards,
Matt

0 masahiko shimizu over 9 years ago in reply to Matthew Beardsworth

Guru 11235 points

Hi Matt

Thank you for your support.
I understood.

Thanks,
Shimizu

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OPA4134 termination of unused pin