Blackmer® IC Voltage-Controlled Amplifiers (VCAs)

A Voltage-Controlled Amplifier is a three-terminal device with a signal input, a signal output and a control voltage input. It varies its signal gain in response to the applied control voltage. TT Semiconductor's Blackmer VCAs are characterized by an exponential control characteristic (gain varies directly in decibels -- dBs -- with control voltage), extremely wide dynamic range, and low signal distortion.

TT Semiconductor 2181-series Trimmable Blackmer Voltage-Controlled Amplifiers
2181-series voltage-controlled amplifiers require adjustment (trimming) to achieve their guaranteed performance. After adjustment, however, they boast the best performance of any IC VCA anywhere.

TT Semiconductor 2180-series Pre-trimmed Blackmer Voltage-Controlled Amplifiers
2180-series VCAs are made from the same patented silicon wafers as our 2181s, but are pre-trimmed during wafer processing so they require no adjustment (trimming) to achieve their guaranteed performance

NEW! TT Semiconductor 2162 Dual Blackmer Voltage-Controlled Amplifier
The 2162 contains two high-performance Blackmer voltage-controlled amplifiers (VCAs). With two opposing-polarity, voltage-sensitive control ports, they offer wide-range exponential control of gain and attenuation with low signal distortion.