Overview
The OPA132UA/2K5G4, produced by Texas Instruments, is a high-speed FET-input operational amplifier that offers exceptional performance in various applications. This device is part of the OPAx132 series, which includes single, dual, and quad versions, providing maximum design flexibility. The OPA132UA is specifically a high-performance grade of the single-channel version, known for its high slew rate, wide bandwidth, and excellent DC performance. It is particularly suited for general-purpose, audio, data-acquisition, and communications applications, especially where high source impedance is encountered.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±0.2 | ±0.5 | ±2 | mV | |
| Input Offset Voltage Drift (dVOS/dT) | TA = –40°C to +85°C | ±2 | ±10 | μV/°C | |
| Power-Supply Rejection Ratio (PSRR) | ±2.5V ≤ VS ≤ ±18V | ±5 | ±15 | μV/V | |
| Input Bias Current (IB) | ±5 | ±50 | pA | ||
| Input Voltage Noise Density (en) | f = 1kHz | 8 | nV/√Hz | ||
| Gain Bandwidth Product (GBW) | 8 | MHz | |||
| Slew Rate (SR) | ±20 | V/μs | |||
| Settling Time | 10V step, G = 1, CL = 100pF | 0.7 | μs (0.1%) | ||
| Total Harmonic Distortion plus Noise (THD+N) | f = 1kHz, G = 1, VO = 3.5Vrms, RL = 2kΩ | 0.0008% | |||
| Output Voltage Swing | RL = 10kΩ | (V+) – 1.2 | (V+) – 0.9 | V (Positive) | |
| Output Voltage Swing | RL = 10kΩ | (V–) + 0.3 | (V–) + 0.5 | V (Negative) | |
| Quiescent Current (IQ) | IO = 0mA | ±4 | ±4.8 | mA |
Key Features
- High slew rate of ±20V/μs and wide bandwidth of 8MHz, ensuring fast settling times.
- Low input bias current and input bias current noise, making it ideal for applications with high source impedance.
- Unity-gain stable and capable of driving high capacitive loads.
- Excellent common-mode rejection ratio (CMRR) and power-supply rejection ratio (PSRR).
- Operational over a wide temperature range of –40°C to +85°C.
- Available in 8-pin SOIC surface-mount package for the single version.
- Input stage cascode circuitry maintains low input bias current over the full input common-mode range.
- Low noise performance with an input voltage noise density of 8 nV/√Hz at 1 kHz.
Applications
- General-purpose amplification.
- Audio applications requiring low noise and high fidelity.
- Data-acquisition systems where high precision and low noise are critical.
- Communications systems, especially in high-source impedance scenarios.
- High-voltage industrial applications.
Q & A
- What is the slew rate of the OPA132UA?
The slew rate of the OPA132UA is ±20V/μs.
- What is the gain bandwidth product (GBW) of the OPA132UA?
The GBW of the OPA132UA is 8 MHz.
- What is the input bias current of the OPA132UA?
The input bias current of the OPA132UA is typically ±50 pA.
- What is the common-mode rejection ratio (CMRR) of the OPA132UA?
The CMRR of the OPA132UA is typically 100 dB.
- What is the maximum power supply voltage for the OPA132UA?
The maximum power supply voltage for the OPA132UA is ±18V (36V total).
- What are the typical applications of the OPA132UA?
The OPA132UA is typically used in general-purpose amplification, audio applications, data-acquisition systems, and communications systems.
- What is the operating temperature range of the OPA132UA?
The operating temperature range of the OPA132UA is –40°C to +85°C.
- What package types are available for the OPA132UA?
The OPA132UA is available in an 8-pin SOIC surface-mount package.
- How does the OPA132UA handle high capacitive loads?
The OPA132UA is capable of driving high capacitive loads and is stable under such conditions.
- What is the quiescent current of the OPA132UA?
The quiescent current of the OPA132UA is typically ±4.8 mA.
