Alex

Glad you found it useful. In the device I used it in I got the current down
to  <80 ua (depending on lighting)

And the maths indicate 3+ years from a 1/2 AA Lithium (if you can believe
the battery rating)

Tim

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Alex Kilpatrick
Sent: 24 April 2003 16:27
To: PICLIST@MITVMA.MIT.EDU
Subject: [EE]: Mucho gracias on low current IR decoder


Last week I was soliciting help for finding a low-current IR decoder.
Several people replied with creative schemes to control the decoder via
the PIC.  Some wonderful soul, however, told me about a device that
consumes only .2 mA instead of the typical 2-3 mA.  It is from Sharp,
and the reason I never found it before was that it was classified as a
"remote control receiver," instead of an IR decoder.  However, it is
pretty much a drop-in replacement for the Panasonic IR decoder, except
it only consumes a *tenth* of the current (and power and gnd are
switched).

This device has allowed my project to go from ~3.5 mA constant current
to .4 mA constant.  This gets me down to coin battery territory, which
is drops my overall weight by a lot (I was using a 9V before).  This is
for a wearable device, so weight is a huge deal.

I wish I remembered who suggested this device, but I want to express my
sincere thanks to them and to everyone else on the list who helps out.
The PICLIST is a wonderful resource!

Alex

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http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.