Re: Better than LM386 on batteries?

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phaeton wrote:
I had looked at the CMOY once a couple years before, and forgotten
about it until PhattyMo just mentioned it. I forget why I didn't
build it then, maybe because (at the time) I thought the opamps it
lists are "special" somehow and they aren't carried by my fave
distributor, or something. Maybe I should just try it out with the op
amps I have.

Oh they are special - they're spectacularly expensive ;]
The Burr-Brown parts have fantastic specs, however, if you need it.

Furthermore, if your distributor doesn't carry them you can always
request a couple of samples. From my experience TI seem pretty good to
their customers, samples included.

- From my memory of building a CMOY, I recall that the specs for the part
he chose have an enormous current handling capability - ideal for driving
speakers/headphones without clipping.

Saying that, most regular op-amps will drive earphones to a decent level.

If you are going to build a CMOY don't don't don't use a 9v battery - the
life through a pair of 64ohm 'phones is, perhaps, 3 hours! Use some good
NiMH AAAs or consider looking at lithium polymer batteries.

- --
Brendan Gillatt
brendan {at} brendangillatt {dot} co {dot} uk
http://www.brendangillatt.co.uk
PGP Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBACD7433
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