Overview
The OPA2134, part of the OPAx134 series from Texas Instruments, is an ultra-low distortion, low-noise operational amplifier specifically designed for high-performance audio applications. This dual-channel operational amplifier features a true FET-input stage, providing exceptional sound quality and speed. It is available in 8-pin DIP and SO-8 surface-mount packages and is specified for operation over a temperature range of –40°C to +85°C. The OPA2134 is known for its high output drive capability, excellent DC performance, and wide output swing, making it an ideal choice for a variety of demanding audio circuits.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (V+ to V–) | ±2.5 | ±18 | V | |
| Input Voltage | (V–) – 0.7 | (V+) + 0.7 | V | |
| Input Bias Current | 5 | pA | ||
| Slew Rate | 20 | V/µs | ||
| Bandwidth | 8 | MHz | ||
| Open-Loop Gain | 120 | dB (2kΩ) | ||
| Output Current | ±35 | mA | ||
| Operating Temperature | –40 | 125 | °C | |
| Junction Temperature | 150 | °C |
Key Features
- Ultra-low distortion: THD+Noise below 0.0004% throughout the audio frequency range (20Hz to 20kHz).
- Low noise: 8nV/√Hz.
- True FET-input: IB = 5pA.
- High speed: Slew rate of 20V/µs and bandwidth of 8MHz.
- High open-loop gain: 120dB (2kΩ).
- Wide supply range: ±2.5V to ±18V.
- Wide output swing: to within 1V of the rails.
- Unity-gain stable and excellent dynamic behavior over a wide range of load conditions.
Applications
- Professional audio and music.
- Line drivers and line receivers.
- Multimedia audio.
- Active filters and preamplifiers.
- Integrators and crossover networks.
Q & A
- What is the OPA2134 operational amplifier used for? The OPA2134 is used in high-performance audio applications due to its ultra-low distortion and low noise characteristics.
- What are the key features of the OPA2134? Key features include ultra-low distortion, low noise, true FET-input, high speed, high open-loop gain, and a wide supply range.
- What is the operating temperature range of the OPA2134? The OPA2134 operates over a temperature range of –40°C to +85°C.
- What are the package options for the OPA2134? The OPA2134 is available in 8-pin DIP and SO-8 surface-mount packages.
- What is the slew rate of the OPA2134? The slew rate of the OPA2134 is 20V/µs.
- What is the bandwidth of the OPA2134? The bandwidth of the OPA2134 is 8MHz.
- What is the input bias current of the OPA2134? The input bias current is 5pA.
- Is the OPA2134 unity-gain stable? Yes, the OPA2134 is unity-gain stable.
- What are some common applications of the OPA2134? Common applications include professional audio, line drivers, line receivers, multimedia audio, active filters, preamplifiers, integrators, and crossover networks.
- What is the maximum output current of the OPA2134? The maximum output current is ±35mA.
