Overview
The OPA1632DG4 is a high-performance, fully differential audio operational amplifier produced by Texas Instruments. Designed to drive high-performance audio analog-to-digital converters (ADCs) or serve as a pre-driver for Class D amplifiers, this component is optimized for exceptional audio quality, low noise, and high output drive characteristics. Its market positioning targets professional audio equipment, high-fidelity audio systems, and industrial audio applications. The OPA1632DG4 stands out for its ultra-low distortion, high-speed performance, and flexible differential architecture, making it a competitive choice for demanding audio applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of Channels | 1 | ||
| Total Supply Voltage (Min) | 5 | V | ±2.5V to ±15V |
| Total Supply Voltage (Max) | 30 | V | ±2.5V to ±15V |
| Gain Bandwidth Product (Typ) | 180 | MHz | |
| Slew Rate (Typ) | 72 | V/µs | |
| Rail-to-Rail | No | ||
| Offset Voltage (Max) | 3 | mV | @25°C |
| Quiescent Current per Channel (Typ) | 14 | mA | |
| Input Voltage Noise (Typ) | 1.3 | nV/√Hz | @1 kHz |
| THD + N (Typ) | 0.000022 | % | @1 kHz |
| Operating Temperature Range | -40 to 85 | °C | |
| Output Current (Typ) | 85 | mA |
Key Features
- Ultra-low distortion: 0.000028% THD+N ensures high-fidelity audio reproduction.
- Low noise: 1.25 nV/√Hz input voltage noise for superior signal-to-noise ratio.
- High-speed performance: 72 V/µs slew rate and 180 MHz gain bandwidth product.
- Fully differential architecture: Enables easy single-ended to differential output conversion.
- Wide supply voltage range: ±2.5V to ±15V for versatile applications.
- Shutdown mode: Reduces power consumption when the device is not in use.
Applications
The OPA1632DG4 is widely used in professional audio equipment, high-fidelity audio systems, and industrial audio applications. It is particularly effective in driving high-performance audio ADCs, such as the PCM1804, and serves as an excellent pre-driver for Class D amplifiers. Its low noise and high-speed performance make it suitable for applications requiring precise audio signal processing, including audio interfaces, mixers, and audio measurement equipment.
Q & A
1. What is the primary use of the OPA1632DG4?
The OPA1632DG4 is primarily used to drive high-performance audio ADCs or as a pre-driver for Class D amplifiers.
2. What is the gain bandwidth product of the OPA1632DG4?
The gain bandwidth product is 180 MHz.
3. What is the typical slew rate of the OPA1632DG4?
The typical slew rate is 72 V/µs.
4. Does the OPA1632DG4 support rail-to-rail operation?
No, it does not support rail-to-rail operation.
5. What is the input voltage noise of the OPA1632DG4?
The input voltage noise is 1.3 nV/√Hz at 1 kHz.
6. What is the operating temperature range of the OPA1632DG4?
The operating temperature range is -40°C to +85°C.
7. Can the OPA1632DG4 be used in single-ended applications?
Yes, its fully differential architecture allows easy conversion from single-ended to differential output.
8. What is the typical quiescent current per channel?
The typical quiescent current is 14 mA.
9. Does the OPA1632DG4 have a shutdown feature?
Yes, it includes a shutdown feature to reduce power consumption when not in use.
10. What is the maximum offset voltage of the OPA1632DG4?
The maximum offset voltage is 3 mV at 25°C.
