SA571N

扩 Compandor

The SA571 Compandor is a versatile low cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expandor. Each channel has a full-wave rectifier to detect the average value of the signal, a linerarized temperature-compensated variable gain cell, and an operational amplifier. The SA571 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems.

Features

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Complete Compressor and Expandor in one IC

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Temperature Compensated

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Greater than 110 dB Dynamic Range

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Operates Down to 6.0 VDC

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System Levels Adjustable with External Components

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Distortion may be Trimmed Out

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Dynamic Noise Reduction Systems

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Voltage−controlled Amplifier