Dynamics Processing ICs from THAT Corporation

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Dynamics Processing ICs

Blackmer® Voltage Controlled Amplifiers

Our industry standard VCAs are the direct descendants of the original integrated circuit VCA created by David Blackmer at dbx, Inc. THAT Corporation was founded by senior managers and engineers from dbx who have advanced VCA technology with new generations of these essential devices.

RMS-Level Detectors

THAT2252 rms-level detectors are designed to convert an ac input current into a dc output voltage. The output is proportional to the log of the true rms value of the input signal. Based on dbx technology and fabricated in a super low-noise process, the 2252 combines wide dynamic range with frequency response to beyond 20 kHz. The logarithmic output is especially convenient for audio applications requiring decibel-linear scaling. The integration time is adjustable via an external R/C pair. With some external circuitry, response to dc is also possible.

Analog Engines®

Our single-chip Analog Engines combine in one IC all the active circuitry needed to construct a wide range of audio dynamics processors. They include a high-performance, exponentially controlled Blackmer® VCA and a log-responding rms-level sensor. The THAT4301 and THAT4320 include three general-purpose opamps allowing more complex signal processing.