>Place resistors in series with the power pins of the devices
>and measure the voltage across them.

Would love to, but the boards are made and I'm looking to
do this without desoldering as much as possible.

>PORTB Weak Pullups 250 typical
>BrownOut 350uA typical
>don't forget Watchdog takes current too.

Nope, nope and nope.

>A/D Converter running? PORTB pullups on?

No, but it does bring up an interesting point.  I'm running at
a regulated 3.3v and monitoring the battery voltage with
AD channel 0.  Battery voltage for alkalines should be less
than that, so I was okay with that.  I forgot to make AN0
an analog input, but I had made it an input.  With the
battery voltage at 3v, the circuit drew an extra 2.5 mA,
just because of that pin.

>Any digital inputs between states (that one got ME once).

Not sure I know what you mean, but I think this goes back
to my previously described mistake.

>Scope the PIC pins while in the low power state to see if the "natural"
>state of the pins without being driven is opposite to what you think itis;
>could be pulling that 250uA that way.

This is the kind of idea I was hoping for.  I'll check it out.

>I agree- 980uA seems too high to me as well. You could try the L parts,
>they DO draw a lot less.

Already using an L- an 18LF2320, at 3.3V.

Thanks for the help, everyone.  I put a different op-amp in
and my current consumption is below 500 uA now.  I'll
post my results if I figure anything else out.

Mike H.

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