LM2903B-Q1: Impact of un-used input pins

rui saito

Prodigy 230 points

Part Number: LM2903B-Q1

Hello,team

If the input of one of the two elements is open,
Will it have any effect on the output of the other element?

Regards,
Saito

11 months ago

+1 Chi Nguyen1 11 months ago

TI__Genius 11701 points

Hello Saito,

Its possible. We usually recommend tying the input to a voltage so that the output will be set in some predictable known and safe state. Here are some configurations you can use. You can leave the output floating however.

Amplifiers

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LM2903B-Q1: Impact of un-used input pins