Overview
The SA572DG, produced by Fairchild Semiconductor (now part of onsemi), is a dual-channel, high-performance gain control circuit. This integrated circuit is designed for dynamic range compression or expansion in various audio and communication systems. It features independent control of attack and recovery times, making it suitable for applications requiring precise gain control.
The SA572DG is particularly useful in high-performance audio systems for noise reduction, as well as in communication systems and video recording applications. It operates over a wide supply voltage range from 6.0 V to 22 V and is assembled in a standard 16-pin dual in-line plastic package or an oversized SOL package.
Key Specifications
| Parameter | Value | Unit | |
|---|---|---|---|
| Supply Voltage (VCC) | 6.0 - 22 | VDC | |
| Operating Temperature Range (TA) | -40 to +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 (THD) - Untrimmed | - | 0.2 | % |
| Total Harmonic Distortion (THD) - Trimmed | - | 0.05 | % |
| Noise Output (20-20 kHz) | - | 6.0 | μV |
Key Features
- Independent control of attack and recovery times.
- Improved low frequency gain control ripple.
- 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.
- 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 SA572DG used for?
The SA572DG is used for dynamic range compression or expansion in high-performance audio systems, communication systems, and video recording applications.
- What is the supply voltage range of the SA572DG?
The supply voltage range is from 6.0 V to 22 V.
- How does the SA572DG control attack and recovery times?
The SA572DG allows independent control of attack and recovery times through external capacitors (CA and CR) and internal resistors.
- What is the operating temperature range of the SA572DG?
The operating temperature range is from -40°C to +85°C.
- What is the typical total harmonic distortion (THD) of the SA572DG?
The typical THD is 0.05% when trimmed.
- Can the SA572DG be used in multiple band signal processing?
Yes, it can be used in multiple band signal processing to optimize dynamic behavior for each band.
- How does the SA572DG reduce low frequency distortion?
The SA572DG reduces low frequency distortion by allowing different attack times in corresponding frequency spectrums and using slow recovery times.
- What type of package is the SA572DG available in?
The SA572DG is available in a standard 16-pin dual in-line plastic package and an oversized SOL package.
- Is the SA572DG a Pb-Free device?
Yes, the SA572DG is a Pb-Free device.
- What are some common applications of the SA572DG?
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.
