SA572DG Datasheet PDF - ON Semiconductor

The SA572 is a dual-channel, high-performance gain control circuit in which either channel may be used for dynamic range compression or expansion. Each channel has a full-wave rectifier to detect the average value of input signal, a linearized, temperature compensated variable gain cell (△G) and a dynamic time constant buffer. The buffer permits independent control of dynamic attack and recovery time with minimum external components and improved low frequency gain control ripple distortion over previous compandors.

●The SA572 is intended for noise reduction in high-performance audio systems. It can also be used in a wide range of communication systems and video recording applications.

●Features

●• Independent Control of Attack and Recovery Time

●• Improved Low Frequency Gain Control Ripple

●• Complementary Gain Compression and Expansion with

●External Op Amp

●• Wide Dynamic Range − Greater than 110 dB

●• Temperature-Compensated Gain Control

●• Low Distortion Gain Cell

●• Low Noise − 6.0 μV Typical

●• Wide Supply Voltage Range − 6.0 V-22 V

●• System Level Adjustable with External Components

●• Pb−Free Packages are Available

●Applications

●• Dynamic Noise Reduction System

●• Voltage Control Amplifier

●• Stereo Expandor

●• Automatic Level Control

●• High-Level Limiter

●• Low-Level Noise Gate

●• State Variable Filter