CIRCUIT DESCRIPTION
The GT560 is a low voltage transconductance block which can be used as an electronic volume control. The transconductance element consists of two diodes back-to-back, whose impedance is varied by changing the amount of current through the diodes.

FEATURES
• 1.0 to 5 V DC supply voltage
• 70 µA of analog current drain (typical)
• 6 µA of memory current drain (typical)
• single or dual switch control
• touch plate compatible, (30 MΩ typ. impedance)
• typical 42 dB range
• adjustable clock frequency increases or decreases time required to change diode impedance