LM 393 switching soft

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On Sat, 6 Jun 2009 13:50:46 -0400, Michael Black <et472@ncf.ca> wrote:

On Sat, 6 Jun 2009, default wrote:

On Fri, 05 Jun 2009 10:51:16 +0100, Eeyore
rabbitsfriendsandrelations@notcoldmail.com> wrote:

No. An LM393 is a dual comparator

Only real difference is the open collector out versus push-pull out ?

Maybe, it there may be some specific shaping of the circuitry to make
it better for comparator use.

Any op-amp can be used as a comparator, it is the same general
circuitry.

Michael

Presumably for on/off, the standard is lower than for linear. But
they make both with the same pin outs and I've subbed linear for
comparators with good results. Maybe the output dissipation is a
little better with a comparator.

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[default]

On Sat, 06 Jun 2009 23:38:09 +0100, Nobody <nobody@nowhere.com> wrote:

On Sat, 06 Jun 2009 13:50:46 -0400, Michael Black wrote:

No. An LM393 is a dual comparator

Only real difference is the open collector out versus push-pull out ?

Maybe, it there may be some specific shaping of the circuitry to make
it better for comparator use.

Any op-amp can be used as a comparator, it is the same general
circuitry.

Some op-amps don't like being driven into saturation.

Today?

The old 709 or 701's would sometimes latch up if you drove them to the
supply rail (particularly if they were operated single supply - and/or
with a high impedance power source)

The 324's seem to be immune to this.
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