[sdiy] XR2206 as ring modulator

[john mahoney]

> Earlier I had asked about people doing weird things with the XR2206. One
of
> them that I was wondering about was using it as a ring moldulator. From
the
> datasheet, it looks like you could.

Well, the discontinued XR2208 is a 4-quadrant multiplier chip. In synths,
"ring" modulators are typically made from 4Q multipliers (which can also be
used as VCAs).

The 2206 function generator has a VCO and a multiplier on board, but I don't
see an external signal input. Although it allows amplitude modulation (AM)
and frequency modulation (FM) of the built-in VCO, you can't ring modulate
an external signal.
--
john