LM13600 -- National's obsoleted it. Any replacements?

[Norm Dresner]

Another interesting item I found in the old data books was the LM13600 Dual
Operational Transconductance Amplifier (OTA) which looked like it could be
used to make some useful circuits. According to National Semi's web site,
it's been obsoleted [I didn't even know that obsolete was a verb!]. Are
there any other manufacturers making anything like this?

Norm

 

[Norm Dresner]

"Ross Herbert" <rherber1SPAMEX@bigpond.net.au> wrote in message
newsgs6n0lrenkmcsemfm2isc0jdvlobh550g@4ax.com...

On Sun, 17 Oct 2004 21:28:57 GMT, "Norm Dresner" <ndrez@att.net
wrote:

|Another interesting item I found in the old data books was the LM13600
Dual
|Operational Transconductance Amplifier (OTA) which looked like it could
be
|used to make some useful circuits. According to National Semi's web
site,
|it's been obsoleted [I didn't even know that obsolete was a verb!]. Are
|there any other manufacturers making anything like this?
|
|Norm


Intersil make the CA3280
http://www.intersil.com/products/deviceinfo.asp?pn=CA3280

Thanks, I've downloaded the data sheet and I'll look at it after breakfast,

Norm

 

[Norm Dresner]

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com> wrote
in message news:10n5pu4kse1et84@corp.supernews.com...

"Norm Dresner" <ndrez@att.net> wrote in message
news:tuBcd.712247$Gx4.32734@bgtnsc04-news.ops.worldnet.att.net...
Another interesting item I found in the old data books was the LM13600
Dual
Operational Transconductance Amplifier (OTA) which looked like it
could be
used to make some useful circuits. According to National Semi's web
site,
it's been obsoleted [I didn't even know that obsolete was a verb!].
Are
there any other manufacturers making anything like this?

I didn't even know that Google was a verb, either, but everyone seems to
think so! [;-)

Shame tho, that so many parts are becoming obsolete. Soon, all there
will be left is a custom circuit order form that you fill out, and
they'll ship you a bunch of them at some exhorbitant price.

Norm

Yeah, but the trick will be to get the price of that one chip down to where
at least some large companies can afford to do a little new development ;-)

Norm