Integrated Circuits

The AS3109 is Alfa’s version of the Roland IR3109 VCF in an SOIC package. The AS3109 is a high performance voltage controlled four-pole filter. 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 a range greater than 15 octaves with little control voltage feedthrough. AS3109 features high input impedance buffers. Features

• 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

Applications

• For electronic music