Improved TL082 op amp?

A

Albert

Guest
need a low noise op amp similar to the TL082. It must have similar
gain, but I need lower power consumption, lower noise and a single
supply chip (low Vcc preferred).
It must be available in a DIP package.

Any suggestions?

TIA

A
 
In article <hgab41do1rsar2k8dvrn6jvq4u279mpted@4ax.com>, Albert wrote:

need a low noise op amp similar to the TL082. It must have similar
gain, but I need lower power consumption, lower noise and a single
supply chip (low Vcc preferred).
It must be available in a DIP package.

Any suggestions?

TIA

A
Click to expand...
OPA2134

--
Namaste--
 
Albert wrote:

need a low noise op amp similar to the TL082. It must have similar
gain, but I need lower power consumption, lower noise and a single
supply chip (low Vcc preferred).
It must be available in a DIP package.

Any suggestions?
Click to expand...
What do you mean by single supply ? An 082 ( in fact any op-amp ) can be
used with a single supply with proper biasing.

Cost will be a *big* factor in the answer. Can you live with an esoteric
price tag ? How much lower noise do you want ? Is it for audio ?

Generally, low voltage operation is rarely seen in low noise op-amps.
What supply do you want to use ?


Graham
 
Albert wrote:

Thanks Artie,

Can't use it, it uses 5 ma per channel, which is twice as much as the
TL082.

Still looking.
Click to expand...
Yeah well you didn't specify current consumption.

That's why your question's likely to throw up any number of unsuitable
answers.

Please go back and *define* the parameters that are most important to you
instead of asking half-arsed questions..


Graham
 
My original post said 'lower power'. The op amp you suggested uses 2-3
times MORE power.

While my original post wasn't precise, I don't know how you can be
critical of me.

I wish you luck.

On Sat, 26 Mar 2005 20:06:26 +0000, Pooh Bear
<rabbitsfriendsandrelations@hotmail.com> wrote:

Albert wrote:

Thanks Artie,

Can't use it, it uses 5 ma per channel, which is twice as much as the
TL082.

Still looking.

Yeah well you didn't specify current consumption.

That's why your question's likely to throw up any number of unsuitable
answers.

Please go back and *define* the parameters that are most important to you
instead of asking half-arsed questions..


Graham
Click to expand...
 
Looks like a winner, many thanks.

I can handle the price tag, the lower supply voltage and lower Vcc
allow me to use a smaller battery in the portable version!

I had picked out an opa2704, which ran on higher voltage, but used
less power. But, I like your suggestion much more.

Again, thanks.

A

..
TLV2471A (single)/TLV2472A (dual) is a nice jellybean for 3.3V or 5V
use. Slightly lower noise than a TL08x, about one-fourth the quiescent
power. Not really cheap.

There's a lot of 3.3V/5V op-amps out there these days, most are only in
surface mount, but the TLV247x are available in DIP too.

Tim.
Click to expand...
 
Albert wrote:

My original post said 'lower power'. The op amp you suggested uses 2-3
times MORE power.
Click to expand...
I didn't suggest anything actually simply because you hadn't defined your
requiremnts,

Why not read my other post.

While my original post wasn't precise, I don't know how you can be
critical of me.
Click to expand...
The devil is in the detail. Ppl are forever coming here asking ' what should I
use ' but rarely define their requirements properly and get answers that
reflect that.

As I said in my other post. Low noise op-amps are rarely low power. You can
reduce power by reducing the volts of course. But you won't answer that
question either.

Graham
 
Tim Shoppa wrote:

need a low noise op amp similar to the TL082. It must have similar
gain, but I need lower power consumption, lower noise and a single
supply chip (low Vcc preferred).
It must be available in a DIP package.

TLV2471A (single)/TLV2472A (dual) is a nice jellybean for 3.3V or 5V
use. Slightly lower noise than a TL08x, about one-fourth the quiescent
power. Not really cheap.
Click to expand...
Only about 1.5 dB quieter and 1/10th the slew rate !

You just can't win.


Graham
 
On Sat, 26 Mar 2005 20:06:26 +0000, Pooh Bear wrote:

Albert wrote:

Thanks Artie,

Can't use it, it uses 5 ma per channel, which is twice as much as the
TL082.

Still looking.

Yeah well you didn't specify current consumption.

That's why your question's likely to throw up any number of unsuitable
answers.

Please go back and *define* the parameters that are most important to you
instead of asking half-arsed questions..


Graham
Click to expand...
He did specify the power. He said "less than the TL082." His post wasn't
NEARLY as vague as many that appear hear. I think you are punishing him
for the sins of others. ;-)

--Mac
 
On Sat, 26 Mar 2005 20:06:26 +0000, Pooh Bear wrote:

Albert wrote:

Thanks Artie,

Can't use it, it uses 5 ma per channel, which is twice as much as the
TL082.

Still looking.

Yeah well you didn't specify current consumption.
Click to expand...
Yeah, well, yes he did:

need a low noise op amp similar to the TL082. It must have similar
^^^^^^^ ^^^^^
gain, but I need lower power consumption, lower noise and a single
^^^^^^^^^^^^^^^^^^^^^^^
supply chip (low Vcc preferred).
Click to expand...
Granted, "power" and "current" aren't the same thing, but still...

Cheers!
Rich
 
Hi,

| > need a low noise op amp similar to the TL082. It must have similar
| > gain, but I need lower power consumption, lower noise and a single
| > supply chip (low Vcc preferred).
| > It must be available in a DIP package.

there are nice parametrical search functions on almost all
manufacturers websites. Why don't you use this? I preder starting @
ti.com, continuing by analog.com If i didn't find it there I try
national and linear. For doing this I need not more tham one hour and
have a nice overview whether my wishes are reasonable realizable or not.

Martin
 
In article <hgab41do1rsar2k8dvrn6jvq4u279mpted@4ax.com>, Albert <>
says...
need a low noise op amp similar to the TL082. It must have similar
gain, but I need lower power consumption, lower noise and a single
supply chip (low Vcc preferred).
It must be available in a DIP package.

Any suggestions?

TIA

A

Look at what Microchip has.
Click to expand...

www.microchip.com

If a Vcc of 5.5V or less is no problem they have a few to choose from.

Jim
 
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