AS3109 - Voltage Controlled Filter
Manufacturer: ALFA RPAR
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Quantity 12+
Price $8.99

The AS3109 is a high-performance voltage-controlled four-pole filter, pin to pin replacement of IR3109 VCF ICs found on vintage Roland synths, like Jupiter series, Juno series, SH-101, and others. 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 15 octave range with little control voltage feedthrough. AS3109 benefits from high input impedance buffers.

SOIC-16 Package


  • Voltage controllable range – 15 octaves
  • Accurate exponential frequency scale - high input impedance buffers
  • Wide transconductance range
  • Low input offset voltage
  • Low control voltage feedthrough - 45 dB typical

AS3109 Datasheet