The AS3310 is a high performance voltage-controlled analog ADSR envelope generator that is pin-for-pin compatible with the CEM3310.
Attack, Decay and Release times are exponentially voltage controllable over a wide range, and the Sustain level is linearly voltage controllable from 0 to 100% of the peak voltage Vp. All four control inputs are isolated from the rest of the circuitry so that the control pins of tracking units may be simply tied together.
The chip features a large time control range of 50,000:1 minimum with accurate exponential time control, a true RC envelope shape, and exceptionally low control feedthrough (90µV max). It has independent Gate and Trigger inputs, and provides good repeatability between units for polyphonic systems.
These are brand new chips fresh from the Alfa Rpar semiconductor factory in Riga, Latvia.