VCR2N/4N JFET VC resistors

[Edu Silva]

Have anyone in the list ever worked with these components?
I think they can be usefull in VC synth modules.

Datasheet: (only 41 Kb)
http://www.siliconix.com/www/data/smallfet/70293.pdf

Some info from the datasheet:

Features
  Continuous Voltage-Controlled Resistance
  High Off-Isolation
  High Input Impedance

Benefits
  Gain Ranging Capability/Wide Range Signal Attenuation
  No Circuit Interaction
  Simplified Drive

Applications
  Variable Gain Amplifiers
  Voltage Controlled Oscillator
  AGC

Description
   The VCR2N/4N/7N JFET voltage controlled resistors have an ac
drain-source resistance that is controlled by a dc bias voltage (VGS)
applied to their high impedance gate terminal. Minimum rDS occurs when VGS
= 0 V. As VGS approaches the pinch-off voltage, rDS rapidly increases. This
series of junction FETs is intended for applications where the drain-source
voltage is a low-level ac signal with no dc component.


Edu
_____________________
ES2 Audio - Som & Luz
Salvador-Bahia-Brazil