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General purpose single-supply op-amp?

Discussion in 'Electronic Basics' started by Bob Masta, Apr 1, 2007.

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  1. Bob Masta

    Bob Masta Guest

    Can anyone recommend a good general purpose
    single-supply op-amp? Something better than
    the old LM324 (which has high input current and
    noise, plus a flaky output stage)?

    This question has come up before (I asked it myself
    back in 2001) and I've never seen a solid answer.
    There are a zillion and three single-supply amps
    out there, most with part numbers long enough
    to choke a server. Surely *somebody* has something
    that's a decent middle-of-the-road part, similar
    to the TL08x or LF35x series for dual supplies.
    The kind of thing you would stock up on if you
    were placing an order anyway, just to keep on
    hand.

    Now, I realize there are some specs here that
    nobody worries too much about for dual-supplies,
    such as just how close to the rails you can get.
    That's OK. I'd just like to hear what people are
    finding useful, to point me in the right direction.

    Thanks!


    Bob Masta

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
    www.daqarta.com
    Scope, Spectrum, Spectrogram, Signal Generator
    Science with your sound card!
     
  2. If you want a drop in replacement for the LM324 that is
    better in almost every respect, take a look at the LT1014:
    http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1154,C1009,C1099,P1223,D3743
    Of course, it costs a lot more, also, but it is now sourced
    by at least 3 makers.
     
  3. john jardine

    john jardine Guest

    For the past year been using the Cmos, rail to rail in and out, TS914. It's
    one of those chips that can be plugged in without thinking and just does
    it's stuff.
    Also developing a healthy respect for the TS974.
    (Cost is the main driver for my usage).
     
  4. I'm just a hobbyist, but I kinda like these:
    http://www.ortodoxism.ro/datasheets/microchip/21685b.pdf

    They're cheap enough, and haven't given me any stability problems on
    protooards. The big catch is they're limited to a maximum 5V supply. Works
    for me, but ymmv. ;-)
     
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