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op-amp MC34071AP

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axawire

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Mar 1, 2007, 11:59:53 PM3/1/07
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Hi,

I am trying to build a circuit on an existing design that calls for an
op-amp MC34071AP but this op-amp seems hard to find and not sold in
small quantites, at most I only need 4. If anyone knows a good source
for it or can recommend a replacement op-amp with very similar
properties it would be appreciated.

thanks,

Rich.

Eeyore

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Mar 2, 2007, 12:12:17 AM3/2/07
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axawire wrote:

> Hi,
>
> I am trying to build a circuit on an existing design that calls for an
> op-amp MC34071AP

What's the design ? Is it a secret ?

Graham

Jim Thompson

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Mar 2, 2007, 9:50:47 AM3/2/07
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From TI, TL071

Or substitute MC34081 -82, -84, or TL081

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Phil Allison

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Mar 2, 2007, 7:10:07 PM3/2/07
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"Jim Thompson"
"axawire"

>>
>>I am trying to build a circuit on an existing design that calls for an
>>op-amp MC34071AP but this op-amp seems hard to find and not sold in
>>small quantites, at most I only need 4. If anyone knows a good source
>>for it or can recommend a replacement op-amp with very similar
>>properties it would be appreciated.
>>
>
> From TI, TL071
>
> Or substitute MC34081 -82, -84, or TL081
>
> ...Jim Thompson

** Thompson must be on drugs.

The MC34071A is a bipolar, wide operating voltage range, single supply
type.

http://www.ortodoxism.ro/datasheets2/c/0hp158dg2t99hlku34wh283kh4fy.pdf


Not a BI-FET op-amp.

....... Phil

Fred Bloggs

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Mar 4, 2007, 7:38:12 AM3/4/07
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There is the TI TL3472 which is a duplicate design with slight variation
in some of the max ratings, probably more realistic, and available in
small quantities from Mouser.

Jim Thompson

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Mar 4, 2007, 10:55:10 AM3/4/07
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On Sun, 04 Mar 2007 12:38:12 GMT, Fred Bloggs <nos...@nospam.com>
wrote:

Oooops! Looks I remembered incorrectly :-(

TL071 is just a poorer spec'd version of TL081 which is the same as
MOTO's MC34081

So I did a boo boo and extrapolated MC34071 to TL071, etc :-(

Eeyore

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Mar 4, 2007, 11:39:30 AM3/4/07
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Jim Thompson wrote:

> TL071 is just a poorer spec'd version of TL081

Where on earth did you get a hare-brained idea like that ?


> which is the same as MOTO's MC34081

Motorola were never able to make a decent bifet op-amp to save themselves.

Graham

axawire

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Mar 20, 2007, 11:01:29 PM3/20/07
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On Mar 2, 1:12 am, Eeyore <rabbitsfriendsandrelati...@hotmail.com>
wrote:

Sorry took so long to respond.

No its not a secret, its the circuit digram from the bottom of this
web page:

http://www.tekscan.com/flexiforce/specs_flexiforce.html

axawire

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Mar 20, 2007, 11:10:25 PM3/20/07
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Thanks, im going to get one of those and see if it works for me.

Winfield Hill

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Mar 21, 2007, 6:56:57 AM3/21/07
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Jim Thompson wrote:
>
> TL071 is just a poorer spec'd version of TL081
> which is the same as MOTO's MC34081.

Which is "DEVICE NOT RECOMMENDED FOR NEW DESIGN"

What!? Huh? Has ON Semi discontinued all their
JFET opamps? Sheesh, stick with TI.

Robert Latest

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Mar 21, 2007, 8:39:24 AM3/21/07
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Jim Thompson wrote:

> TL071 is just a poorer spec'd version of TL081

Actually I think it's the other way round.

robert

Eeyore

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Mar 21, 2007, 10:00:33 AM3/21/07
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Robert Latest wrote:

Yes.

Graham

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