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'[PICLIST] [EE] looking for TLO72 and / or TLO82 da'
2000\10\17@111322 by Maxime Prati

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hi !

I'm looking for operational amplifiers TLO72 and / or TLO82 datasheet...
can someone point me where can I find them ...


Thank you.


"Eagles soar, but weasels never get sucked into jet engines."

Maxime Prati
Embedded Systems Development
Position Technology
http://www.postech.ca
spam_OUTmpratiTakeThisOuTspampostech.ca

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2000\10\17@112247 by Alan B. Pearce

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National semiconductor or TI?

http://www.national.com/design/ for national semiconductor
http://www.ti.com/ for Texas instruments

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2000\10\17@115122 by David VanHorn

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At 10:58 AM 10/17/00 -0400, you wrote:
>hi !
>
>I'm looking for operational amplifiers TLO72 and / or TLO82 datasheet...
>can someone point me where can I find them ...

Nothing spectacular about these parts, Most any modern fet opamp will do.
These are duals, 72 is "low noise" and 82 is "low cost".

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2000\10\17@130147 by David Minkler

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Hi,
http://www.ti.com  and search on tl072 (note, that's a zero seven two).
Regards,
Dave

Maxime Prati wrote:
{Quote hidden}

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2000\10\17@130938 by Dan Michaels

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Maxime Prati wrote:
>hi !
>
>I'm looking for operational amplifiers TLO72 and / or TLO82 datasheet...
>can someone point me where can I find them ...
>


OK, but after you get the datasheet, use an LF353 or LF412 instead.
All 3 look very similar, and TL082 looks "identical" to LF353 on the
d/s, but the LFxxx parts work vastly better at higher frequencies,
in my experience.

regards,
- Dan Michaels
==============

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2000\10\17@132529 by David VanHorn

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>
>OK, but after you get the datasheet, use an LF353 or LF412 instead.
>All 3 look very similar, and TL082 looks "identical" to LF353 on the
>d/s, but the LFxxx parts work vastly better at higher frequencies,
>in my experience.

Sometimes that's a minus.
Like my current project, where I have to buffer a 10mV signal cleanly,
while sitting two inches away from an antenna radiating 6W 5mS pulses at
915 MHz.

I had to select for the slowest fet "precision" op-amp in order to supress
the EMI from direct rectification in the chip itself.

Layout already handled, impedances as low as possible....

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2000\10\17@141008 by Dan Michaels

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Dave VanHorn wrote:
>>
>>OK, but after you get the datasheet, use an LF353 or LF412 instead.
>>All 3 look very similar, and TL082 looks "identical" to LF353 on the
>>d/s, but the LFxxx parts work vastly better at higher frequencies,
>>in my experience.
>
>Sometimes that's a minus.
>Like my current project, where I have to buffer a 10mV signal cleanly,
>while sitting two inches away from an antenna radiating 6W 5mS pulses at
>915 MHz.
>
>I had to select for the slowest fet "precision" op-amp in order to supress
>the EMI from direct rectification in the chip itself.
>
>Layout already handled, impedances as low as possible....
>


[good to hear from you, Dave, but durn it, that's that same box
you were working on 6 months ago - don't you have it fixed yet?
--> just KIDDING].

But seriously - if you are working with signals faster than slow
mud, then the LFxxx chips are fairly good up to about 1 Mhz. For
better performance in this same range, try the TLE2072/2082 from
TI. There are also a lot of dual opamps with GBW [gain bandwidth]
much faster - 20-70 Mhz, but they take more care when dealing with.

- danM

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2000\10\17@153151 by David VanHorn

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>
>[good to hear from you, Dave, but durn it, that's that same box
>you were working on 6 months ago - don't you have it fixed yet?
>--> just KIDDING].

Nope, it's been in development for three years! That part's fixed though.
It's a very deliberate process, with some rather un-cooperative vendors.

The latest proto begins field testing today, as a matter of fact.

However, another is in the brew now, which has HUGE quantity potential.
It also has much fewer constraints, having been designed from the ground
up, rather than being "Evolved" out of available bits.

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2000\10\17@210629 by Brent Brown

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> hi !
>
> I'm looking for operational amplifiers TLO72 and / or TLO82 datasheet...
> can someone point me where can I find them ...

Just for your info, have been involved with a couple of designs
where lots of TL084's (quad version) were specified, but ended up
using TL064's for a HUGE reduction in power, no noticeable
change in performance in these applications. Data sheets from TI
website.

Brent Brown
Electronic Design Solutions
16 English Street
Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/text: 025 334 069
eMail:  RemoveMEbrent.brownspamTakeThisOuTclear.net.nz

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2000\10\17@230847 by David VanHorn

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>
>Just for your info, have been involved with a couple of designs
>where lots of TL084's (quad version) were specified, but ended up
>using TL064's for a HUGE reduction in power, no noticeable
>change in performance in these applications. Data sheets from TI
>website.

That was the original part number designators.
6X, low power
7X, low noise
8X, low cost

X= 1,2,4 depending on how many amps in the package.

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2000\10\24@194645 by David VanHorn

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>
>[good to hear from you, Dave, but durn it, that's that same box
>you were working on 6 months ago - don't you have it fixed yet?
>--> just KIDDING].

Nope, it's been in development for three years! That part's fixed though.
It's a very deliberate process, with some rather un-cooperative vendors.

The latest proto begins field testing today, as a matter of fact.

However, another is in the brew now, which has HUGE quantity potential.
It also has much fewer constraints, having been designed from the ground
up, rather than being "Evolved" out of available bits.

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