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Opamp question.

stiriac77
stiriac77 over 2 years ago

I'd like some guidelines on using opamps with a single 5V to 12V power source. From what I see in the documentation and WEB examples opamps require a double +/- power source. For small home automation projects this is not practical at all. 

Would be grateful for pointing me to some tutorial or examples on the subject.

Thank you,

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  • shabaz
    shabaz over 2 years ago +6
    There's several guides on this. Googling for these terms will land you on two PDF documents: Single-Supply Op Amp Design Techniques and A Single-Supply Op-Amp Circuit Collection
  • dang74
    dang74 over 2 years ago +4
    A lot of op-amps require a negative rail because they can't produce 0V otherwise. Look at the VO, VOUT or Output Voltage Swing entry in the tables in the op-amp datasheet. For instance in the THS4031 data…
  • genebren
    genebren over 2 years ago in reply to shabaz +2
    These two are my go to references for all things in single-sided Op Amp designs!
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  • taifur
    taifur over 2 years ago

    Even you can use very common LM324

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  • taifur
    taifur over 2 years ago

    Even you can use very common LM324

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