Overview
The OPA1632, produced by Texas Instruments, is a high-performance, fully differential audio operational amplifier designed to deliver exceptional audio quality. This amplifier is optimized for driving high-performance audio analog-to-digital converters (ADCs) and as a predriver for class-D amplifiers. It features a fully differential architecture, which converts single-ended inputs to balanced differential outputs, reducing even-order harmonics and minimizing common-mode noise interference. The OPA1632 is characterized by its ultra-low distortion, low noise, high speed, and wide supply range, making it suitable for a variety of professional audio applications.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Gain Bandwidth Product (GBW) | 180 | MHz |
| Slew Rate | 72 | V/μs |
| Input Voltage Noise | 1.25 | nV/√Hz |
| Total Harmonic Distortion + Noise (THD + N) at 1 kHz | 0.000022% | % |
| Supply Voltage Range | ±2.5 V to ±15 V | V |
| Shutdown Current (VS = ±5 V) | 0.85 mA | mA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Output Current (Typical) | 85 mA | mA |
| Common Mode Rejection Ratio (CMRR) | 90 dB | dB |
| Package Types | SOIC, HVSSOP |
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
- Low shutdown current: 0.85 mA (VS = ±5 V)
- Operating temperature range: –40°C to +85°C
- Shutdown feature to save power when not in use
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
Q & A
- What is the primary application of the OPA1632?
The OPA1632 is primarily used for driving high-performance audio analog-to-digital converters (ADCs) and as a predriver for class-D amplifiers in professional audio applications.
- What are the key features of the OPA1632?
The OPA1632 features ultra-low distortion, low noise, high speed, fully differential architecture, wide supply range, and a low shutdown current.
- What is the gain bandwidth product of the OPA1632?
The gain bandwidth product of the OPA1632 is 180 MHz.
- What is the slew rate of the OPA1632?
The slew rate of the OPA1632 is 72 V/μs.
- What is the input voltage noise of the OPA1632?
The input voltage noise of the OPA1632 is 1.25 nV/√Hz.
- What are the typical applications of the OPA1632?
Typical applications include professional audio mixers, microphones, speaker systems, soundbars, turntables, professional video cameras, guitar amplifiers, and data acquisition systems.
- What are the available package types for the OPA1632?
The OPA1632 is available in SOIC and HVSSOP package types.
- What is the operating temperature range of the OPA1632?
The operating temperature range of the OPA1632 is –40°C to +85°C.
- Does the OPA1632 have a shutdown feature?
Yes, the OPA1632 has a shutdown feature to save power when the device is not in use.
- What is the typical output current of the OPA1632?
The typical output current of the OPA1632 is 85 mA.
