What to do with the unused pins on half of a dual op amp?

Pedro Vecino

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Location: Spain
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#1

What to do with the unused pins on half of a dual op amp?

11-17-2024, 12:03 AM

Hi all. I need to use only half of the 4558 dual op-amp. What should I do with the pins on the unused other half to avoid problems?
Thanks a lot.
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loudthud

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Location: Near Dallas Texas
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#2

11-17-2024, 02:22 AM

Ground the Plus input and connect the Minus input to the output.

WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
REMEMBER: Everybody knows that smokin' ain't allowed in school !
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J M Fahey

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Location: Buenos Aires, Argentina
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#3

11-17-2024, 04:23 AM

True, but if you are using it with split supply.

If single supply, connect +IN to Vref.

Juan Manuel Fahey
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Pedro Vecino

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#4

11-17-2024, 10:09 AM

Thank you so much!
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