[sdiy] SSM2164 Obsolescence Update

[David G. Dixon]

> Proof? Look at the way that everything else has moved on. Why 
> should analog be any different?

Actually, quite a bit of development has occurred in analog, particularly in
the way it interfaces with digital.  Just look at all the lovely
high-resolution DACs available now!  Unfortunately, everything analog seems
to be going to low voltage (2.7 to 5.5V, typically), which complicates
things for people stuck in +/-12 to 15V land.