Re: Op amp distortion

On Mon, 03 Sep 2007 16:49:16 -0400, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@xxxxxxxxxxx> wrote:

Jim Thompson wrote:

On Mon, 03 Sep 2007 14:29:13 -0400, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@xxxxxxxxxxx> wrote:


Jim Thompson wrote:


On Mon, 03 Sep 2007 13:40:22 -0400, Fred Bloggs <nospam@xxxxxxxxxx>
wrote:



John Larkin wrote:


[snip]

Just don't use it as a comparator. When one stage switches, the other
three outputs will seriously spike, probably because of the way the
current sources are shared. At least the original National part
behaved that way.

John


HAhaaaaaaaa...is there anything good about this part?


The LM339 Comparator is essentially the same circuit, but without
compensation.

...Jim Thompson

correct me if i'm wrong but doesn't the 339 have open collectors?
or am I thinking of another?


Yep. Now compare the rest of the circuitry.

...Jim Thompson
Yeah, well that's kind of an old chip. Very simple actually.

Kinda ;-)

...Jim Thompson
--
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