Overview
The NE570DR2G Compandor, produced by onsemi, is a versatile and low-cost dual gain control circuit. This integrated circuit allows either channel to be used as a dynamic range compressor or expandor. It is designed to provide high-performance gain control with features such as low distortion, high signal-to-noise ratio, and a wide dynamic range. The NE570 is particularly suited for applications in telecommunications, audio systems, and data communications due to its temperature-compensated design and stable biasing over a wide temperature range.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Maximum Operating Voltage | VCC | 6.0 | - | 24 | VDC |
| Operating Ambient Temperature Range | TA | 0 | - | +70 | °C |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
| Power Dissipation | PD | - | - | 400 | mW |
| Thermal Resistance, Junction-to-Ambient | RJA | - | - | 105 | °C/W |
| Supply Current (No Signal) | ICC | - | 4.3 | 4.8 | mA |
| Output Current Capability | IOUT | ±20 | - | - | mA |
| Output Slew Rate | SR | - | ±0.5 | - | V/μs |
| Gain Cell Distortion (Untrimmed) | - | 0.3 | 1.0 | % | |
| Internal Reference Voltage | - | 1.7 | 1.8 | 1.9 | V |
Key Features
- Complete Compressor and Expandor in One IC: The NE570DR2G integrates both compressor and expandor functions in a single IC, making it highly versatile.
- Temperature Compensated: The circuit includes a linearized temperature-compensated variable gain cell, ensuring stable performance over a wide temperature range.
- High Dynamic Range: Offers a dynamic range greater than 110 dB, making it suitable for applications requiring high signal-to-noise ratios.
- Low Distortion: The gain cell distortion can be trimmed down to 0.05%, ensuring high fidelity in audio and data systems.
- Adjustable System Levels: System levels can be adjusted using external components, allowing for customization to various applications.
- Pb-Free Packages Available: The NE570DR2G is available in Pb-free packages, complying with environmental regulations.
Applications
- Cellular Radio: Suitable for use in cellular radio systems due to its high performance and stability.
- Telephone Systems: Used in telephone trunk companding and other telephone applications requiring dynamic range compression or expansion.
- High Level Limiter and Low Level Expandor/Noise Gate: Can be used as a high-level limiter or a low-level expandor/noise gate in various audio and data systems.
- Dynamic Noise Reduction Systems: Effective in dynamic noise reduction systems, enhancing the signal-to-noise ratio.
- Voltage-Controlled Amplifier and Dynamic Filters: Can be used as a voltage-controlled amplifier and in dynamic filter applications.
Q & A
- What is the primary function of the NE570DR2G Compandor?
The NE570DR2G Compandor is a dual gain control circuit that can be used as either a dynamic range compressor or expandor.
- What is the operating voltage range of the NE570DR2G?
The operating voltage range is from 6.0 VDC to 24 VDC.
- What is the maximum operating junction temperature for the NE570DR2G?
The maximum operating junction temperature is 150°C.
- What is the typical supply current for the NE570DR2G with no signal?
The typical supply current is 4.3 mA to 4.8 mA.
- What is the output current capability of the NE570DR2G?
The output current capability is ±20 mA.
- How can the distortion in the NE570DR2G be trimmed?
The distortion can be trimmed down to 0.05% using the THD_TRIM pins.
- What are some common applications of the NE570DR2G?
Common applications include cellular radio, telephone systems, high-level limiters, low-level expandors/noise gates, dynamic noise reduction systems, and voltage-controlled amplifiers.
- Is the NE570DR2G available in Pb-free packages?
- What is the dynamic range of the NE570DR2G?
The dynamic range is greater than 110 dB.
- How does the NE570DR2G handle temperature variations?
The NE570DR2G includes a linearized temperature-compensated variable gain cell, ensuring stable performance over a wide temperature range.
