Re: What's the LM324 of the day?

On Jan 30, 2:51 pm, Joerg <notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Jim Thompson wrote:
On Wed, 30 Jan 2008 19:35:48 GMT, Joerg
<notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx> wrote:

Jim Thompson wrote:
On Wed, 30 Jan 2008 11:13:43 -0800, Joerg
<notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx> wrote:

[snip]
As John Devereux wrote the LM324 is still very alive and kicking. I use
it all the time. If you want a reasonable low voltage performance it has
a sibling, the LMV324:

http://focus.ti.com/lit/ds/symlink/lmv324.pdf

Costs a few pennies more though so I always use the LM324 when possible.
Cheapskate ;-)

Have you evaluated the LMV324 for output performance near ground? Sink
ability, etc ?

It quickly loses steam below 100mV and way at the bottom the current
source in there loses grip as well. So while marketeers may call them RR
for my taste they really aren't. Doesn't matter in most of my designs,
what I really need is the fact that the input CM range includes the
negative rail.

Now that we are on the topic about migration paths: When does someone
come up with a grandchild to the MC34063 that can run at 10x of its
frequency, still cost less than a quarter and is available from half a
dozen manufacturers? When can we stop rolling our own?

I don't have a clue ;-)

The market would be huge but the movers and shakers at places like ON
Semi, National, TI don't see it. Instead they come out with an ever
increasing number of boutique chips that mass product designers don't use.

I had the same complaint in the 1970's... then the 1980's... then the
1990's... :-).

I don't complain anymore about that. And I can still buy LM324's, and
LM723's too! (But, goddamn it, not the CA3046!)

Tim.
.