Product Summary

The NE571N 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 NE571N is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems. The applications of the NE571N inluce: Cellular radio, High level limiter, Low level expandor—noise gate, Dynamic filters, CD Player.

Parametrics

NE571N absolute maximum ratings: (1)VCC Maximum operating voltage: 18 VDC; (2)TA Operating ambient temperature range: -40 to +85 ℃; (3)PD Power dissipation: 400 mW.

Features

NE571N features: (1)Complete compressor and expandor in one IChip; (2)Temperature compensated; (3)Greater than 110dB dynamic range; (4)Operates down to 6VDC; (5)System levels adjustable with external components; (6)Distortion may be trimmed out; (7)Dynamic noise reduction systems; (8)Voltage-controlled amplifier.

Diagrams

NE571N block diagram

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