SA572DR2G is a dual-channel programmable analog compandor with adjustable attack/recovery time, for professional audio dynamic range compression, expansion and noise reduction
Specifications
Manufacturer:
Onsemi
Product Number:
SA572DR2G
Description:
IC COMPANDOR 16SOIC
Introduction
SA572DR2G Dual-Channel Programmable Analog Compandor
SA572DR2G is a dual-channel programmable analog compandor with adjustable attack/recovery time, designed for professional audio dynamic range compression, expansion and noise reduction applications.
Product Functional Overview
The SA572DR2G is a dual-channel, high-performance analog gain control compandor circuit. Each channel integrates a full-wave rectifier for input signal average value detection, a linearized temperature-compensated variable gain cell, and a dynamic time constant buffer circuit.
The buffer enables independent adjustment of attack time and recovery time with few external components. It features lower low-frequency gain control ripple distortion compared with traditional compandors. It supports dynamic range compression and expansion for analog signals, and is mainly used for audio noise reduction, automatic volume control and dynamic signal processing.
Supply voltage range: 6.0 V ~ 22 V; package: SOIC‑16; operating temperature: −40 °C to +85 °C.
Core Functional Features
- Dual independent channels, supports compression & expansion mode
- Independently adjustable attack and recovery time
- Optimized low-frequency gain control ripple distortion
- Ultra-wide dynamic range: >110 dB
- Temperature compensated variable gain cell, low distortion
- Ultra-low input noise: typical 6.0 µV
- Wide single supply voltage: 6.0 V ~ 22 V
- Matched with external op amp to form complementary compression/expansion system
Typical Application Scenarios
- Dynamic audio noise reduction systems (DNR)
- Voltage controlled amplifier (VCA) circuits
- Stereo audio expansion processors
- Automatic level control (ALC) & automatic volume control
- High-level audio signal limiter
- Low-level noise gate circuit
- State variable active filters
- Professional audio equipment, broadcast audio systems
- Communication analog signal processing circuits
- Video recording & audio storage devices
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