[sdiy] dual "VCA" chip

[rdrake]

from the latest Electronic Goldmine flyer; could be a simple VCA solution, but would need some tweaks to work at synth levels:

The UPC1406HA is a silicon monolithic integrated circuit in a 9–Lead SIP package designed for sound control applications.

Features:
Two separate attenuators
The characteristic control curve is linear against logarithmic output
Channel Separation: 64dB MIN
Typical Application: Sound MPX attenuator for TV, Radio and mobile receiver

Datasheet Available

http://www.goldmine-elec-products.com/prodinfo.asp?number=A20202