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SA571DR2G

IC COMPANDOR 2-CH 16-SOIC

Part Number: SA571DR2G

Manufacturer: onsemi

Category: Audio Special Purpose

Package: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: SA571DR2G.pdf

Description: IC COMPANDOR 2-CH 16-SOIC

Select Quantity Stock: 7,959

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Qty.	Unit Price	Ext. Price
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2000+	$0.42866	$857.32

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

SA571DR2G Dual Gain Compandor

A structured technical overview of SA571DR2G, covering its dual-channel compandor architecture, key characteristics, electrical reference data, 16-pin SOIC package, pin functions, application areas and replacement selection considerations.

onsemi 16-Pin SOIC-W 6V to 18V

Device Classification Dual Gain Compandor

Part Number: SA571DR2G

Mounting Type: Surface Mount

Operating Range: -40°C to +85°C

PRODUCT OVERVIEW

What Is SA571DR2G?

SA571DR2G is a dual-channel gain-control compandor from onsemi. Each channel can be configured as either a dynamic-range compressor or an expandor, allowing the device to support audio level management and noise-reduction functions in a wide range of analog signal paths.

Each channel integrates a full-wave rectifier for average signal-level detection, a linearized temperature-compensated variable gain cell and an operational amplifier. These functional blocks allow designers to build compression, expansion, limiting, noise-gating and voltage-controlled amplifier circuits with relatively few external components.

The SA571 family was designed for applications that require wide dynamic range and predictable gain-control behavior. System operating levels and distortion can be adjusted with external components, which makes the device useful in communication, audio and signal-conditioning designs.

Dual Gain-Control Channels Two channels can independently support compression or expansion functions.

Wide Dynamic Range Designed for dynamic range greater than 110dB in compandor applications.

Flexible Analog Design External components allow system level, filtering, gain and distortion optimization.

DEVICE HIGHLIGHTS

Key Features and Benefits

Compressor and Expandor

Either channel may be configured for dynamic-range compression or expansion, enabling complementary compandor functions in one IC.

Two Independent Channels

Dual gain-control channels simplify stereo, transmit/receive and other two-path analog signal-processing designs.

Over 110dB Dynamic Range

Wide dynamic-range capability supports low-level signal processing while accommodating substantially larger signal amplitudes.

Temperature Compensation

Temperature-compensated gain-control circuitry helps maintain predictable operation across the specified industrial temperature range.

6V Minimum Operation

The device operates from a single supply starting at 6V and supports analog audio and communication systems using higher supply rails.

16-Pin SOIC-W Package

SA571DR2G is supplied in a surface-mount 16-pin SOIC-W package and the DR2G ordering option is provided in tape-and-reel form.

REFERENCE DATA

Technical Specifications

Part Number	SA571DR2G	Manufacturer	onsemi
Device Type	Dual Gain Compandor	Number of Channels	2
Supply Voltage	6V to 18V	Dynamic Range	Greater than 110dB
Channel Architecture	Full-Wave Rectifier + Variable Gain Cell + Op Amp	Gain Control	Temperature-Compensated
Primary Functions	Compression / Expansion / Gain Control	System Adjustment	External Components
Package	16-Pin SOIC-W	Package Case	751G-03
Mounting Type	Surface Mount	Packaging	Tape & Reel
Operating Temperature	-40°C to +85°C	Environmental	Pb-Free / Halide-Free

Electrical values shown above are reference values for product identification and preliminary component selection. Detailed limits, test conditions and application-dependent performance should always be confirmed from the current official onsemi datasheet before design or production use.

DESIGN REFERENCE

Compandor and Circuit Considerations

Compressor / Expandor Configuration

Each SA571 channel contains the basic functions required for level sensing and gain control. The external circuit determines whether the channel operates as a compressor, expandor or another gain-control function.

Compressor + Expandor = Compandor Signal Path

Use the rectifier section to derive a control signal from the input level.
Configure the gain cell and op amp according to the required transfer characteristic.
Set system operating levels with the recommended external resistor network.
Confirm distortion, headroom and noise performance under the actual signal conditions.

PCB and Signal-Path Guidance

Because compandor circuits process low-level analog signals and level-dependent control voltages, PCB layout and component placement can directly influence noise, distortion and channel interaction.

Place supply bypass capacitors close to the device power pins.
Keep sensitive rectifier and gain-control nodes away from fast digital traces.
Use short analog ground return paths and avoid large shared switching currents.
Follow the recommended SOIC-W footprint and verify pin-1 orientation before assembly.

16-PIN SOIC-W

Pin Configuration Reference

SA571

SOIC-W TOP VIEW

Confirm package orientation, pin numbering and the current manufacturer pin diagram before PCB layout or replacement of an existing device.

1 RECT CAP 1 Channel 1 rectifier timing capacitor connection

2 RECT IN 1 Channel 1 full-wave rectifier input

3 GAIN CELL IN 1 Channel 1 variable gain-cell input

4 GAIN CELL OUT 1 Channel 1 variable gain-cell output

5 GND Ground reference

6 OP AMP IN− 1 Channel 1 op-amp inverting input

7 OP AMP IN+ 1 Channel 1 op-amp non-inverting input

8 OUTPUT 1 Channel 1 op-amp output

9 OUTPUT 2 Channel 2 op-amp output

10 OP AMP IN+ 2 Channel 2 op-amp non-inverting input

11 OP AMP IN− 2 Channel 2 op-amp inverting input

12 VCC Positive supply input

13 GAIN CELL OUT 2 Channel 2 variable gain-cell output

14 GAIN CELL IN 2 Channel 2 variable gain-cell input

15 RECT IN 2 Channel 2 full-wave rectifier input

16 RECT CAP 2 Channel 2 rectifier timing capacitor connection

APPLICATION AREAS

Typical SA571DR2G Applications

Radio Communication Systems

Dynamic-range compression and expansion for analog voice and communication signal paths.

Telephone and Voice Systems

Level-control and companding functions for voice-band communication equipment.

High-Level Limiter

Gain-control circuitry can be configured to limit excessive analog signal levels.

Noise Gate / Low-Level Expandor

Expansion of low-level signals can support noise-gating and background-noise reduction.

Voltage-Controlled Amplifier

The variable gain-cell architecture can be applied in analog voltage-controlled gain designs.

Audio and Dynamic Filters

Useful in dynamic noise-reduction, audio level-processing and level-dependent filter circuits.

REPLACEMENT GUIDANCE

Selecting an Alternative Part

A replacement for SA571DR2G should not be selected only because another device is described as a compandor. The compression/expansion transfer characteristics, supply range, internal architecture, package and pin functions must be checked against the actual circuit.

Supply voltage range

Dual-channel architecture

Compressor / expandor function

Dynamic range

Gain-cell characteristics

Rectifier and time constants

16-pin package dimensions

Pin-to-pin compatibility

Alternative Part Support

Send the original part number, application, required quantity and key parameters to Haishengye Electronics for replacement-part sourcing support.

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MANUFACTURER INFORMATION

onsemi

SA571DR2G is part of onsemi's analog audio and gain-control product portfolio. The SA571 architecture combines two gain-control channels with full-wave rectifiers, temperature-compensated variable gain cells and operational amplifiers for companding and related analog signal-processing functions.

SUPPLIED BY

Haishengye Electronics

Haishengye Electronics provides electronic component stock supply, BOM sourcing, quotation support and quality inspection services.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status and application suitability must be verified using current official manufacturer documentation before design, procurement or production.

TECHNICAL RESOURCES

SA571DR2G Technical Information

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Specifications

Product Attribute: Attribute Value

Part Number: SA571DR2G

Manufacturer: onsemi

Package: 16-SOIC (0.295", 7.50mm Width)

Series: -

Package/Case: 16-SOIC (0.295", 7.50mm Width)

Packaging: Tape & Reel (TR)

Product Status: Active

Function: Compandor

Applications: Consumer Audio, Telecommunication Systems

Number of Channels: 2

Interface: Analog

Voltage - Supply: 6V ~ 18V

Operating Temperature: -40°C ~ 85°C (TA)

Specifications: 110dB

Mounting Type: Surface Mount

Grade: -

Frequently Asked Questions

1. How can I order SA571DR2G from Haishengye Electronics?

Submit an RFQ directly on this page with your required quantity, target price and delivery requirements. Our sales team will review the request and provide a quotation.

2. How does Haishengye Electronics verify the quality of SA571DR2G?

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3. Are the stock and price of SA571DR2G updated in real time?

Electronic component inventory and prices may change frequently. Displayed values are references, and final stock and pricing will be confirmed in the quotation.

4. Which payment methods are supported?

Wire Transfer, PayPal, Alipay, WeChat, Credit Card, Western Union, MoneyGram and Escrow may be supported depending on the order and destination.

5. How is international shipping arranged?

International shipping may be arranged through DHL, UPS, FedEx, TNT and other logistics channels. Tracking information will be provided after shipment.

6. What is the return or replacement process for SA571DR2G?

Contact our sales team within the agreed period if there are quantity differences, incorrect items or clear external defects. Products should remain unused and in their original packaging.

7. Can I request technical support for SA571DR2G?

Yes. Contact our team for datasheets, package details, product specifications, alternative parts and sourcing assistance.

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SA571DR2G Procurement and Technical Support

SA571DR2G is manufactured by onsemi. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

Haishengye Electronics supports customers sourcing SA571DR2G and related electronic components for prototype development, maintenance, NPI, production preparation and one-stop BOM procurement.

Submit an RFQ to request the latest stock, price, lead time, batch information, alternative parts, package confirmation or technical documents for SA571DR2G.

Part Number: SA571DR2G

Manufacturer: onsemi

Package: 16-SOIC (0.295", 7.50mm Width)

Category: Audio Special Purpose

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