A 4-Pole Voltage Controlled Filter from Solid State Micro Technology for Music, Inc.


Features:
from the original data sheet

  • low cost
  • high control rejection (36dB typical for 1000 to 1 sweep)
  • ±18V to ±5V supplies
  • minimum external parts count
  • stable resonance over frequency sweep
  • no op amp required between output and VCA
  • 90dB dynamic range
  • 10 000 to 1 minimum sweep range
  • on-chip resonance control
  • differential signal inputs


    Synthesizers using the chip:
    with the amount used

    Bananna Poly Synth          6
    CMI Fairlight II            8
    Crumar Bit 01 (late models) 6
    Crumar Bit 99               6
    Crumar Bit One              6
    Korg Mono/Poly              1
    Korg PolySix                6
    PPG Wave 2.2 and 2.3        8
    Siel DK600                  6
    Siel Opera 6                6
    


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