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What's your favorite rail-rail op amp?

Clearly I'm designing a circuit. I'm kind of in Rip-van-winkle land as far as current parts, since I've been doing software and algorithms for the last few years. So I'm current on lots of nifty through-hole parts, but choosing nice stuff out of the oceans of newer parts could drag me down considerably.

What's your favorite rail-rail op amp? It doesn't have to have spectacular performance -- It's basically for a unity-gain follower on a signal that's been AC coupled then run through a 5kHz lowpass filter anyway.

It may well have input voltages that exceed the power supply rails, so something that's vice-free in that regard would be nice. Beyond that, it doesn't have to be a terribly hot performer.

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Tim Wescott
Wescott Design Services
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Reply to
Tim Wescott
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National's LM6132/6134 is nice and reasonably well-behaved as long as you're not beyond the rails by more than a few hundred mV.

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Rich Webb     Norfolk, VA
Reply to
Rich Webb

I use a lot of LM7301s, when I have high (like +-12) supply rails, but it is a bit expensive. I really ought to find a cheaper low-voltage RRIO opamp for those cases where the rails are lower.

John

Reply to
John Larkin

National makes a bunch of op amps that would be really nice if they weren't 10-20 dB noisier than the competition. Bizarre.

Cheers

Phil Hobbs

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Dr Philip C D Hobbs
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Reply to
Phil Hobbs

The AD8606 is our general purpose R-R op-amp.

Reply to
krw

Tim Wescott wrote in news:G--dnc8UjYW6jxDQnZ2dnUVZ snipped-for-privacy@web-ster.com:

OPA2365

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OPA2376AIDR higher CMRR BUT higher Offset and drift then the OPA2365

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If your looking for DC precsion then youd be hard pressed to beat the AD8629 They aint giving it away though its a chopper.

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The OPA2727 isnt RRI but it is RR out its pretty cheap good upto 12V

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Reply to
Hammy

" snipped-for-privacy@att.bizzzzzzzzzzzz" wrote in news: snipped-for-privacy@4ax.com:

That one is pretty good for $1.46 for 250+. I dont know how I missed it might be a replacem,ent for my OPA2376.

Reply to
Hammy

We also use the AD8566 in higher voltage applications and the National LMV832 where RF hardening is needed.

Reply to
krw

I like AD8655. Don't know about it's behaviour when overdriven though.

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John Devereux
Reply to
John Devereux

,

ay.

I like the LT1013/1014, though it's more a single supply opamp. Piss poor slow at 0.4 V/us. But a low Vos, which you may not care about, being AC coupled and all.

George H.

Reply to
George Herold

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