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Voltage Controlled Amplifier

Hands-down the most widely used VCAs in both pro and MI applications, THAT Corporation's 2180 and 2181 series provide extremely wide dynamic range and control range, very low distortion (lowest in the trimmable 2181 series), low noise, and the all-important "deci-linear" control whereby linear changes in control port voltage result in decibel-wise changes in signal gain.

Make sure to check out THAT's extensive Design Notes for dozens of application and circuit ideas!

Part Number ManufacturerVs minVs maxIsDynamic RangeGain RangeTHD typ fromenCommentsData Sheet
THAT2162 THAT±2.25V±16V5.2mA118dB130dB0.05%-97.5dBVDualTHAT2162Q16-U datasheet
THAT2180 THAT±4V±18V2.4mA120dB130dB0.005%-98dBVPre trimmedTHAT2180BL08-U datasheet
THAT2181 THAT±4V±18V2.4mA120dB130dB0.0025%-98dBVTrimmableTHAT2181AS08-U datasheet

 

Data Sheet

Links

Application Note. Digital Gain Control with Analog VCAs
Design Note. Improving VCA performance I
Design Note. Improving VCA Performance II & III
Design Note. VCAs in a pan potentiometer application
Design Note. VCA Symmetry Auto-Trim Circuit
THAT Voltage Controlled Amplifier Selection Guide
THAT Application Notes