TLV2474A-Q1: Not use op-amp channel termination

Muhammad Fariz Bin Nor Azhar

Part Number: TLV2474A-Q1

Hi TI,

Since this IC is a 4-channel op-amp, what termination should be made for the not use op amp channel? Should I ground the output and input of the not use channel?

Thank you.

Best regards,

Fariz

over 1 year ago

0 kai klaas69 over 1 year ago

Guru 140200 points

Hi Fariz,

take a 100k / 100k voltage divider and generate an auxiliary voltage of about midsupply and connect the +inputs of unsed OPAmps to this auxiliary voltage. Connect the -inputs of each unused OPAmp to its output forming a simple voltage follower (gain = +1V/V).

Kai

0 Ron Michallick over 1 year ago

TI__Guru*** 142656 points

Fariz,

Setup the unused amplifier so that the output is not at either rail and inputs are in the valid common mode voltage range. Kai's unity gain solution is good.

Never short to output, and avoid shorting inputs.

0 Muhammad Fariz Bin Nor Azhar over 1 year ago in reply to Ron Michallick

Prodigy 70 points

Thank you Kai and Ron.

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TLV2474A-Q1: Not use op-amp channel termination