New audio opamp from National

EDN had an article today about Bob Pease coming up with a difinitive test for capacitors and also a new opamp especially for high quality audio. Here's a link to the opamp:
http://www.national.com/pf/LM/LM4562.html

It's nice to have alternatives to the usual chips.

Jim Zuehsow

I believe someone brought that IC up recently in another thread. It looks like a good part although I'm using ADSL-intended ICs for new audio designs. Some of the chips are cheaper than the "audio" ICs being sold.

http://www.groupdiy.com/index.php?topic=18341

Mbira was kind enough to hook me up with some samples, but I haven't gotten around to trying them out yet... Too many irons in the fire.

They are now available in small quantities from distributors, at least when I checked weeks ago. Price was high-ish but not scandalous.

[quote author="NewYorkDave"]http://www.groupdiy.com/index.php?topic=18341
They are now available in small quantities from distributors, at least when I checked weeks ago. Price was high-ish but not scandalous.[/quote]

I remember the days of spending 15 bucks for a 709, if you could find one, and having it die instantly if you looked at it the wrong way.
When the 1034 and later re-numbered 5534 came out, they were close to 8 bucks a pop. That's the price you pay to be the first kid on the block to have one.

[quote author="Jim Zuehsow"]

I remember the days of spending 15 bucks for a 709, if you could find one, and having it die instantly if you looked at it the wrong way.
[/quote]

Amen...

Anybody remember feed forward compensation on old LM301s?

JR

If I can get my hands on 10 I would populate a channel with them vs. 5532 or 2134 and see how they compare.

Digikey shows stock...8DIP for $5.50, qty1.

Too bad about the abs. max. +/- 18V rail limitation.

Bri

I've been using the lm6172. very fast, very stable. sounds very neutral.