Analog Engine ICs from THAT Corporation

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Analog Engine® ICs

Our single-chip audio dynamics processors, dubbed "THAT Analog Engines®," combine in one IC all the active circuitry needed to construct a wide range of dynamics processors. Each of the 43xx series includes a high-performance, exponentially controlled Blackmer® voltage controlled amplifier (VCA) and a log-responding RMS-level sensor. The 4320 includes three general-purpose opamps allowing more complex signal processing.

THAT4305 - A low-cost, basic compressor/ limiter/ expander system for dual supply voltages.

THAT4320 - A versatile compressor/ limiter/ expander system for single supply voltages optimized for low-voltage, low-power operation.

THAT4315 - A low-cost basic compressor/ limiter/ expander system for single supply voltages designed for low-voltage, low-power operation.

THAT4316 - A very low-voltage, low-power basic compressor/ limiter/ expander system for single supply voltages.

Analog Engine Selector

For a printable PDF version of this guide follow this link: THAT Analog Engine Selector

	THAT 4305	THAT 4320	THAT 4315	THAT 4316
	Low-Cost Analog Engine	Low-Voltage Low-Power Analog Engine	Low-Voltage Low-Cost Analog Engine	Very Low-Voltage Analog Engine
Supply voltage	±4.5 ~ ±16 V	4.5 ~ 16 V	4.5 ~ 16 V	2.7 ~ 5.5 V
Supply type	Dual	Single	Single	Single
Supply current	3.5 mA	3.7 mA	1.6 mA	1.2 mA
Opamps included	No	Yes	No	No
Cost	Low	Moderate	Low	Low
VCA THD	~ 0.07 %	~ 0.05 %	~ 0.07 %	~ 0.07 %
Adjustable symmetry	No	No	No	No
VCA control ports	2 (+/-)	1 (+)	2 (+/-)	2 (+/-)
VCA gain range	± 60 dB	-100 ~ +40 dB	± 60 dB	± 50 dB
Packages	QSOP-16	QSOP-28 QFN-24	QSOP-16	QSOP-16
Datasheet link	4305 Datasheet	4320 Datasheet	4315 Datasheet	4316 Datasheet