The LM386 is only around 1/4 watt o/p though isn't it?

There probably are ultra low quiescent devices around, used in walkmans and the like, but I don't have any part no.s of the top of my head.  What kind of quality do you need?  If you aren't shooting for hi-fi, then you could roll your own by using a low power op-amp followed by a push-pull emitter follower stage.  If you don't bias the output stage but rely on feedback to minimise crossover distortion then quiescent will be pretty tiny.

Cheers

Mike

-----Original Message-----
From:   Andrew Kelley [SMTP:kelleyat@JUNO.COM]
Sent:   Wednesday, March 22, 2000 2:17 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        Re: [OT] Audio amp

An LM386 with caps and a 2n2222 will work.
Use the 2n222 as a switch and lm386 as an amp.

Andrew
PS: That's what I use in my lightwave transciever.
ARS: N1YEW

On Thu, 23 Mar 2000 01:02:57 +1200 Jinx <joecolquitt@CLEAR.NET.NZ>
writes:
> Hi, any suggestions for a low power audio amp for a battery
> operated unit. 1 or 2W, 5 to 6.5V. Discrete or IC, desirably well
> below 1mA quiescent or, better, one that can be powered down
> when not needed

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