Improved TL082 op amp?

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.

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

He never said "fast" :-).

The TLV245x, 246x, and 277x round out the line for lower power, higher current out, higher slew rate. The 247x is the middle-of-the-road choice.

Depends on who you're racing against :-).

Tim.

Thanks Artie,

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

Still looking.

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.

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.

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

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

I didn't suggest anything actually simply because you hadn't defined your requiremnts,

Why not read my other post.

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

Only about 1.5 dB quieter and 1/10th the slew rate !

You just can't win.

Graham

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

Yeah, well, yes he did:

^^^^^^^ ^^^^^

^^^^^^^^^^^^^^^^^^^^^^^

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

Look at what Microchip has.

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

Jim