Home        
 Semiconductor  
 Production   
   Operational
   Amplifiers
 
   Voltage
   Comparators
 
   Transistors
 
   Application
   specific   
 
   Hi-End
   solutions   
 
  Module 
 
 Contact Info    
 
   
Contract
PCB Services
 
 По-русски    
 
 
   
 
Voltage controlled filter (VCF)
 AS3320-Voltage controlled filter (VCF) 

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.
   
Datasheet

 FEATURES

- voltage controllable frequency - 12 octave range
- voltage controllable resonance - from zero to oscillation
- accurate exponential frequency scale
- accurate linear resonance scale
- low control voltage feed-through -45dB typical
- filter configurable into LPF, HPF, all pass, etc.
- low noise: -86dB typical
- low distortion in passband - 0.1% typical
- low warm up drift




   Contact information

•  140 Ropazu Str.,
•  Riga, LV-1006, Latvia
•  tel: +371 67553075
•  fax: +371 67553173
•  www.alfarzpp.lv
•  e-mail: alfa@alfarzpp.lv
 
 
Copyright. JSC ALFA. All rights reserved.