From: Paul Christensen (firstname.lastname@example.org)
TL084 and TL074 quad bifet op-amps have been around a very long time.
Here's one link to their product data sheets. The TL074 is a slightly lower
noise version (nV/Sq.Rt. Hz). Otherwise, they're identical.
----- Original Message -----
From: "Paul Harden, NA5N" <email@example.com>
To: "Low Power Amateur Radio Discussion" <qrp-l@Lehigh.EDU>
Sent: Wednesday, December 27, 2000 3:51 PM
Subject: Re: TL082 14pin?
> On Wed, 27 Dec 2000, Ed Kessler wrote:
> > I am planning to build the W1FB active audio filter (p. 69 in the QRP
> > Notebook) and ordered the board from Far Circuits. The circuit uses 14
> > TL082s.
> > Does a 14 pin version exist? Is there a typo in the QRP Notebook's
> > circuit? What's up?
> I just looked at several of our "TI Linear Data Books" and master
> cross references, and I see NO references to a 14-pin version EVER being
> available. For the thru-hole types, only the 8-pins are made. The
> TL082's are a dual op-amp in the 8 pins.
> I'll try to remember tonight to look at Doug's QRP Notebook for the
> 14-pin reference you cite. If he does say that, it is clearly a
> Incidentally, the "TL" devices are originally the Texas Instruments
> line with "T" for TI and the "L" meaning their Linear series, for those
> who wonder what the heck the "TL" means (as opposed to "LM" or
> 72, Paul NA5N
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