Overview
The OPA132U/2K5, part of the OPAx132 series from Texas Instruments, is a high-speed FET-input operational amplifier. This device is known for its excellent DC performance and high-speed capabilities, making it suitable for a wide range of applications, including general-purpose, audio, data acquisition, and communications. The OPA132U/2K5 is available in a single-channel configuration and is operational with power supply voltages from ±2.5V to ±18V. It features a high slew rate of ±20V/μs and a gain bandwidth product of 8MHz, ensuring fast settling times and stable operation under various load conditions.
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 = 10Hz | 23 | 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 (VO) | RL = 10kΩ | (V+) – 1.2 | (V+) – 0.9 | V (Positive) | |
| Output Voltage (VO) | RL = 10kΩ | (V–) + 0.3 | (V–) + 0.5 | V (Negative) | |
| Quiescent Current (IQ) | IO = 0mA | ±4 | ±4.8 | mA |
Key Features
- High Speed and Wide Bandwidth: The OPA132U/2K5 features a high slew rate of ±20V/μs and a gain bandwidth product of 8MHz, ensuring fast settling times and stable operation.
- Low Input Bias Current: The FET-input stage provides very low input bias current, typically ±5pA, which is crucial for applications requiring minimal input current errors.
- Excellent DC Performance: The device offers low input offset voltage (±0.2mV to ±2mV) and low input offset voltage drift (±2μV/°C to ±10μV/°C) over the operating temperature range.
- Unity-Gain Stability: The OPA132U/2K5 is stable in unity gain and maintains excellent dynamic behavior over a wide range of load conditions, including high load capacitance.
- High Source Impedance Compatibility: The device is particularly suitable for applications where high source impedance is encountered, such as in audio, data acquisition, and communications.
- Independent Circuitry: In dual and quad versions, each amplifier has completely independent circuitry, ensuring minimal crosstalk and no interaction even when one amplifier is overdriven or short-circuited.
- Wide Operating Voltage Range: The device operates with power supplies from ±2.5V to ±18V, offering flexibility in various application scenarios.
Applications
- General-Purpose Applications: Suitable for a wide range of general-purpose uses due to its high speed, low noise, and excellent DC performance.
- Audio Applications: Ideal for audio circuits where high fidelity and low noise are critical.
- Data Acquisition: Used in data acquisition systems where high source impedance and low input bias current are essential.
- Communications: Applicable in communication systems requiring high-speed and low-noise amplification.
- High-Voltage Industrial Applications: Suitable for high-voltage industrial applications with high source impedance due to its wide bandwidth and high capacitive load drive capabilities.
Q & A
- What is the slew rate of the OPA132U/2K5?
The slew rate of the OPA132U/2K5 is ±20V/μs.
- What is the gain bandwidth product of the OPA132U/2K5?
The gain bandwidth product is 8MHz.
- What is the typical input offset voltage of the OPA132U/2K5?
The typical input offset voltage is ±0.5mV.
- What is the input bias current of the OPA132U/2K5?
The input bias current is typically ±5pA.
- Is the OPA132U/2K5 stable in unity gain?
Yes, the OPA132U/2K5 is stable in unity gain.
- What is the operating temperature range of the OPA132U/2K5?
The operating temperature range is –40°C to +85°C.
- What are the power supply voltage ranges for the OPA132U/2K5?
The device operates with power supplies from ±2.5V to ±18V.
- How does the OPA132U/2K5 handle high source impedance?
The device is particularly suitable for applications with high source impedance due to its FET-input stage and low input bias current.
- What are some common applications of the OPA132U/2K5?
Common applications include general-purpose, audio, data acquisition, and communications.
- How does the OPA132U/2K5 minimize crosstalk in dual and quad versions?
In dual and quad versions, each amplifier has completely independent circuitry, minimizing crosstalk and interaction between channels.
