SA571DR2

Audio Special Purpose Overview

The SA571DR2 is a dual gain control integrated circuit manufactured by onsemi, housed in a 16-pin SOIC package. It functions as a versatile compandor where each channel can operate as a dynamic range compressor or expandor. The device incorporates a full-wave rectifier for signal detection, a linearized temperature-compensated variable gain cell, and an operational amplifier. It operates within a supply voltage range of 6 V to 18 V and supports an industrial temperature range from -40°C to +85°C. Key electrical characteristics include a typical supply current of 4.2 mA at 15 V, an output current capability of ±20 mA, and a dynamic range exceeding 110 dB.

Audio Special Purpose Feature Summary

• Dual-channel architecture allowing independent compressor or expandor configuration per channel
• Temperature-compensated variable gain cell with internal bandgap reference for stability
• Greater than 110 dB dynamic range with distortion trimmable via external components
• Operates down to 6.0 VDC with ±20 mA output current capability

Audio Special Purpose Applications

• Cellular radio systems
• Telecommunication systems and modems
• Satellite broadcast/receive audio systems
• Dynamic noise reduction systems
• CD players and high-level limiters

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix 'R2' corresponds to the 1000-unit tape and reel shipping format as defined in the manufacturer's documentation. Confirm that the component meets the required industrial temperature specifications (-40°C to +85°C) for the intended application environment. Ensure compatibility with surface mount assembly processes for the 16-SOIC package.

Audio Special Purpose Selection Notes

Select the SA571DR2 when a low-cost, dual-channel companding solution is required for audio or data systems. The device is suitable for applications needing adjustable system levels and distortion trimming. Consider the 16-SOIC package dimensions and the need for external capacitors for rectifier filtering and compensation when designing the circuit layout.

Audio Special Purpose Part Context

The SA571 is part of onsemi's specialized audio and compandor product line. The 'D' suffix indicates the 16-pin Plastic Small Outline (SO-16 WB) package, while the 'R2' suffix denotes the tape and reel packaging option containing 1000 units. This variant is designed for automated surface-mount assembly processes.