Overview
The SA572DR2G, produced by onsemi, is a dual-channel, high-performance gain control circuit designed for dynamic range compression or expansion. This IC is particularly suited for noise reduction in high-performance audio systems, as well as various communication and video recording applications. Each channel of the SA572DR2G features a full-wave rectifier, a linearized, temperature-compensated variable gain cell, and a dynamic time constant buffer. This configuration allows for independent control of attack and recovery times, minimizing external components and improving low-frequency gain control ripple distortion.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | VCC | - | - | 22 | VDC |
| Operating Temperature Range | TA | -40 | - | 85 | °C |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
| Power Dissipation | PD | - | - | 500 | mW |
| Thermal Resistance, Junction-to-Ambient | RθJA | - | - | 105 | °C/W |
| Supply Current | ICC | - | - | 6.3 | mA |
| Total Harmonic Distortion (Untrimmed) | THD | - | 0.2 | 1.0 | % |
| Total Harmonic Distortion (Trimmed) | THD | - | 0.05 | 0.25 | % |
| Noise Output | - | - | 6.0 | - | μV |
Key Features
- Independent control of attack and recovery time.
- Improved low-frequency gain control ripple distortion.
- Complementary gain compression and expansion with external op-amp.
- Wide dynamic range greater than 110 dB.
- Temperature-compensated gain control.
- Low distortion gain cell.
- Low noise - 6.0 μV typical.
- Wide supply voltage range - 6.0 V to 22 V.
- System level adjustable with external components.
- Pb-free device.
Applications
- Dynamic noise reduction systems.
- Voltage control amplifiers.
- Stereo expanders.
- Automatic level control.
- High-level limiters.
- Low-level noise gates.
- State variable filters.
Q & A
- What is the SA572DR2G used for?
The SA572DR2G is used for dynamic range compression or expansion, particularly in high-performance audio systems, communication systems, and video recording applications.
- What are the key features of the SA572DR2G?
Key features include independent control of attack and recovery time, improved low-frequency gain control ripple distortion, wide dynamic range, temperature-compensated gain control, low distortion, and low noise.
- What is the supply voltage range of the SA572DR2G?
The supply voltage range is from 6.0 V to 22 V.
- What is the operating temperature range of the SA572DR2G?
The operating temperature range is from -40°C to +85°C.
- How does the SA572DR2G control attack and recovery times?
The attack and recovery times are controlled by external capacitors (CA and CR) and internal resistors, allowing for independent adjustment of these times.
- What are some common applications of the SA572DR2G?
Common applications include dynamic noise reduction systems, voltage control amplifiers, stereo expanders, automatic level control, high-level limiters, low-level noise gates, and state variable filters.
- How does the SA572DR2G reduce low-frequency ripple distortion?
The SA572DR2G reduces low-frequency ripple distortion through its novel level sensor and buffer amplifier design, allowing for slow recovery times and minimizing ripple distortion.
- Is the SA572DR2G a Pb-free device?
Yes, the SA572DR2G is a Pb-free device.
- What is the typical total harmonic distortion (THD) of the SA572DR2G?
The typical THD is 0.05% to 0.25% when trimmed.
- How is the output noise of the SA572DR2G characterized?
The output noise is typically 6.0 μV with no input signals.
