> > 2. I need a cheap but reliable 10 bit A/D with IIC. (dosen't every one?)
>
> Hmmm, I've been looking for I2C ADCs and have been unlucky so far.  Instead
> I found the MAX186, which is 12 bits, with 8 channel MUX and internal 4.096V
> reference.  Unfortunately, it requires 4 pins to drive it.
>
Check out the Crystal Semiconductor CS5505 16 bit A/D.  While not IIC,
when you use it in its SEC (synchronous external clocking) mode, it can
share an IIC bus with a serial EEPROM.  Of course you have to use an
extra IO pin on the controller as a chip enable to tri-state the A/D
data line - and you have to bit bang the A/D communications instead of
using a true IIC routine.

Another option is to check out Linear Technology (www.linear-tech.com ?)
- they're always coming out with neat analog stuff.

-- Matt