Overview
The OPA1632DR, produced by Texas Instruments, is a high-performance, fully differential audio operational amplifier designed to deliver exceptional audio quality. It is optimized for driving high-performance audio analog-to-digital converters (ADCs) and serves as a predriver for class-D amplifiers. The OPA1632DR features ultra-low distortion, low noise, and high current drive, making it ideal for various professional audio applications. Its fully differential architecture allows for the conversion of single-ended inputs to balanced differential outputs, reducing even-order harmonics and minimizing common-mode noise interference.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | ±2.5 V to ±15 V | V |
| Input Voltage Noise | 1.25 nV/√Hz | nV/√Hz |
| Slew Rate | 72 V/μs | V/μs |
| Gain Bandwidth Product | 180 MHz | MHz |
| Total Harmonic Distortion + Noise (THD+N) | 0.000028% (Differential I/O, RL = 2 kΩ) | % |
| Output Current | 150 mA | mA |
| Shutdown Current | 0.85 mA (VS = ± 5 V) | mA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Types | SO-8, HVSSOP-8 PowerPAD™ |
Key Features
- Excellent sound quality with ultra-low distortion (0.000028%) and low noise (1.25 nV/√Hz)
- High speed: Slew rate of 72 V/μs and gain bandwidth product of 180 MHz
- Fully differential architecture: Balanced input and output, converting single-ended input to balanced differential output
- Wide supply range: ±2.5 V to ±15 V
- Shutdown feature to conserve power
- High current drive capability
- Operating temperature range: –40°C to +85°C
Applications
- Professional audio mixers or control surfaces
- Professional microphones and wireless systems
- Professional speaker systems and audio amplifiers
- Soundbars and turntables
- Professional video cameras
- Guitar and other instrument amplifiers
- Data acquisition (DAQ) systems
- Audio ADC drivers, such as for the PCM1804
Q & A
- What is the primary function of the OPA1632DR? The OPA1632DR is a fully differential amplifier designed to drive high-performance audio analog-to-digital converters (ADCs) or as a predriver for class-D amplifiers.
- What are the key performance characteristics of the OPA1632DR? It features ultra-low distortion, low noise, high current drive, and a high gain bandwidth product.
- What is the supply voltage range for the OPA1632DR? The supply voltage range is ±2.5 V to ±15 V.
- What is the slew rate of the OPA1632DR? The slew rate is 72 V/μs.
- What is the gain bandwidth product of the OPA1632DR? The gain bandwidth product is 180 MHz.
- What is the typical total harmonic distortion + noise (THD+N) for the OPA1632DR? The typical THD+N is 0.000028% for differential input/output with a load resistance of 2 kΩ.
- Does the OPA1632DR have a shutdown feature? Yes, it includes a shutdown feature to conserve power when not in use.
- What are the package options for the OPA1632DR? It is available in SO-8 and HVSSOP-8 PowerPAD™ packages.
- What is the operating temperature range for the OPA1632DR? The operating temperature range is –40°C to +85°C.
- What are some common applications for the OPA1632DR? Common applications include professional audio mixers, microphones, speaker systems, soundbars, turntables, and audio ADC drivers.
