描述 Description

The SA572 Compandor 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 (DELTAG) 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.

特性 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 Noise6.0 μV Typical
? Wide Supply Voltage Range ? 6.0 V-22 V
? System Level Adjustable with External Components

應(yīng)用 Application

? Dynamic Noise Reduction System
? Voltage Control Amplifier
? Stereo Expandor
? Automatic Level Control
? High-Level Limiter
? Low-Level Noise Gate
? State Variable Filter
? Satellite Radio
? Audio Amplifier

簡介

SA572屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的SA572音頻專用音頻專用的半導(dǎo)體器件專為音頻信號(hào)的濾波、驅(qū)動(dòng)、放大、轉(zhuǎn)換和接口而設(shè)計(jì)。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費(fèi)類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動(dòng)器、前置放大器、信號(hào)混合、信號(hào)處理、語音觸發(fā)器解決方案和 10 Base-T。