Overview
The OPA134PAG4, part of the OPAx134 series from Texas Instruments, is an ultra-low distortion, low-noise operational amplifier specifically designed for audio applications. It features a true FET input stage, which provides exceptional sound quality and speed, making it ideal for demanding audio circuits. The amplifier offers high output drive capability, excellent DC performance, and a wide output swing, allowing increased headroom and minimizing distortion. It is free from phase-inversion and overload problems common in other FET-input operational amplifiers and can operate from ±2.5V to ±18V power supplies.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage Range | ±2.5V to ±18V | V |
| Input Bias Current | 5 pA | A |
| Input Voltage Noise | 8 nV/√Hz | V/√Hz |
| Slew Rate | 20 V/µs | V/µs |
| Bandwidth | 8 MHz | Hz |
| Open-Loop Gain | 120 dB (2 kΩ) | dB |
| Output Voltage Swing | Within 1 V of the rails | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Types | 8-pin DIP, SO-8 surface-mount |
Key Features
- Ultra-low distortion: 0.00008%
- Low noise: 8 nV/√Hz
- True FET-input: IB = 5 pA
- High speed: Slew rate of 20 V/µs, bandwidth of 8 MHz
- High open-loop gain: 120 dB (2 kΩ)
- Wide supply range: ±2.5V to ±18V
- Wide output swing: within 1 V of the rails
- Unity-gain stable with excellent dynamic behavior over a wide range of load conditions
- Completely independent circuitry in dual and quad versions for lowest crosstalk
Applications
- Professional audio and music
- Line drivers
- Line receivers
- Multimedia audio
- Active filters
- Preamplifiers
- Integrators
- Crossover networks
Q & A
- What is the typical input bias current of the OPA134PAG4?
The typical input bias current is 5 pA.
- What is the slew rate of the OPA134PAG4?
The slew rate is 20 V/µs.
- What is the bandwidth of the OPA134PAG4?
The bandwidth is 8 MHz.
- What is the open-loop gain of the OPA134PAG4?
The open-loop gain is 120 dB (2 kΩ).
- What is the supply voltage range for the OPA134PAG4?
The supply voltage range is ±2.5V to ±18V.
- What are the typical package types for the OPA134PAG4?
The typical package types are 8-pin DIP and SO-8 surface-mount.
- What is the operating temperature range for the OPA134PAG4?
The operating temperature range is –40°C to +85°C.
- Is the OPA134PAG4 unity-gain stable?
- What are some common applications for the OPA134PAG4?
- Does the OPA134PAG4 have any special features to minimize distortion?
