ALFA RPAR AS3320 VCF IC - CEM3320 IC Replacement

ALFA RPAR AS3320 VCF IC - CEM3320 IC Replacement

The AS3320 is a high performance voltage controlled four-pole filter with on-chip voltage controllable resonance IC. The four independent sections may be interconnected to provide a wide variety of filter responses, such as low pass, high pass, band pass and all pass. A single input exponentially controls the frequency over greater than a ten octave range with little control voltage feedthrough. Another input controls the resonance in a modified linear manner from zero to low distortion oscillation. For those demanding applications, provision has been made to allow trimming for improved control voltage rejection. Each filter section features a variable gain cell which is fully temperature compensated, exhibits a better signal-to-noise ratio and generates its low distortion predominantly in the second harmonic. The device includes a minus two volt regulator to ensure low power dissipation and consequent low warm-up drift. 

The AS3320 is available in DIP18 thru-hole, SOIC18 SMT and QFN-24 SMT configurations

Datasheet: http://www.alfarzpp.lv/eng/sc/AS3320.pdf

Here is a wonderful Wikipedia page that lists original CEM and SSM chips in synthesizers to help with replacment decisions: https://en.wikipedia.org/wiki/CEM_and_SSM_chips_in_synthesizers