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Pooh Bear
Guest
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 Posted:
Tue Nov 15, 2005 9:35 am Post subject:
Re: any op-amp recommendations? |
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Winfield Hill wrote:
| Quote: | Anthony Fremont wrote...
I'm getting ready to order some junk from Digikey. Can someone
recommend good general purpose op-amps to stock for tinkering? I've
been using the 741 just because I had a few laying around, but I know
that better things exist. I've also got a couple of TL082s, but really
haven't done much of anything with them yet. The 741 has worked ok
(more or less) for me, but I want something with better gain at 40kHz
(ultrasound tinkerings) and that can go much closer to the rails since I
like to use 5V for power. Something that won't easily latch up would be
nice too. I don't need anything really fancy, just something relatively
inexpensive ($2 or so) and easy to use. BTW, I like to use solderless
breadboards for prototyping.
For comparators I use the LM393, is that still a reasonable choice or
should I stock up on something newer?
My vote, for +/-15V supplies, is the LM412 dual JFET opamp.
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LF412 ?
Odd choice. Hardly ever see it in commercial kit. Well, never actually.
TI's TL series of bifets would make more sense.
Graham
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Riscy
Guest
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| Posted:
Tue Nov 15, 2005 5:35 pm Post subject:
Re: any op-amp recommendations? |
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| Avoid Advance Linear Device...the op-amp range is really crap! |
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Riscy
Guest
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| Posted:
Tue Nov 15, 2005 5:35 pm Post subject:
Re: any op-amp recommendations? |
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I think it time to move to micropower op-amp and dispose +/-15V or
+/-12V (unless you really really need it). I work on +3.3V and +5V
schematic with various rail to rail op-amp, the performance is pretty
good nowaday, especially low noise just released by LT. It also easier
to interface with digital circuit. I use ADR361 for voltage reference
source as midway.
Good luck
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redbelly
Guest
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| Posted:
Wed Nov 16, 2005 1:35 am Post subject:
Re: any op-amp recommendations? |
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Winfield Hill wrote:
| Quote: | redbelly wrote...
I'm wondering if that's a typo and you mean LF412?
Yes, sorry.
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Thank you for mentioning them, they look like just the thing for my
purposes (home hobbyist, low frequency analog stuff, such as
photodectors and thermal measurements).
Mark |
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Winfield Hill
Guest
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| Posted:
Sat Nov 19, 2005 3:14 pm Post subject:
Re: any op-amp recommendations? |
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Riscy wrote...
| Quote: |
Avoid Advance Linear Device...the op-amp range is really crap!
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What do you mean by "range" and what do you mean by "crap"?
--
Thanks,
- Win |
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redbelly
Guest
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| Posted:
Sun Nov 20, 2005 5:35 pm Post subject:
Re: any op-amp recommendations? |
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Winfield Hill wrote:
| Quote: | Riscy wrote...
Avoid Advance Linear Device...the op-amp range is really crap!
What do you mean by "range" and what do you mean by "crap"?
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It depends what his definition of "is" is :-)
Mark |
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