Overview
The Texas Instruments OPA228UA/2K5 is a high-precision, low-noise operational amplifier designed to offer excellent performance in both AC and precision DC applications. This single-channel op amp is part of the OPAx228 series, which is known for its wide bandwidth and high slew rate, making it suitable for a variety of applications including professional audio equipment, data acquisition, and industrial AC-DC systems. The OPA228UA/2K5 is available in an 8-pin SOIC (D) package and operates over a wide supply range from ±2.5 V to ±18 V.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Bandwidth | Small-signal bandwidth | 33 MHz |
| Slew Rate | Maximum slew rate | 10 V/μs |
| Noise | Input-referred voltage noise | 3 nV/√Hz |
| Input Bias Current | Maximum input bias current | 10 nA |
| Offset Voltage | Maximum input offset voltage | ±75 μV |
| Common-Mode Rejection Ratio (CMRR) | Minimum CMRR | 138 dB |
| Open-Loop Gain | Minimum open-loop voltage gain | 160 dB |
| Supply Range | Operating supply voltage range | ±2.5 V to ±18 V |
| Package | Package type | SOIC-8 |
| Operating Temperature Range | Operating temperature range | –40°C to +85°C |
Key Features
- Low Noise: 3 nV/√Hz input-referred voltage noise, making it suitable for high-precision applications.
- Wide Bandwidth: 33 MHz small-signal bandwidth and a high slew rate of 10 V/μs.
- High Precision: High common-mode rejection ratio (CMRR) of 138 dB and high open-loop gain of 160 dB.
- Low Input Bias Current: Maximum input bias current of 10 nA.
- Low Offset Voltage: Maximum input offset voltage of ±75 μV.
- Wide Supply Range: Operates from ±2.5 V to ±18 V, providing flexibility in power supply design.
- Single, Dual, and Quad Versions: Available in single, dual, and quad configurations to meet various application needs.
Applications
- Professional Audio Equipment: Ideal for rack-mounted audio systems due to its low noise and high precision.
- Data Acquisition (DAQ): Suitable for high-precision data acquisition systems.
- Condition Monitoring Sensors: Used in sensor applications requiring high accuracy and low noise.
- Spectrum Analyzers: Applicable in spectrum analysis due to its wide bandwidth and low noise characteristics.
- Industrial AC-DC Systems: Suitable for industrial applications requiring high precision and reliability.
Q & A
- What is the bandwidth of the OPA228UA/2K5?
The OPA228UA/2K5 has a small-signal bandwidth of 33 MHz.
- What is the slew rate of the OPA228UA/2K5?
The slew rate of the OPA228UA/2K5 is 10 V/μs.
- What is the input-referred voltage noise of the OPA228UA/2K5?
The input-referred voltage noise is 3 nV/√Hz.
- What is the maximum input bias current of the OPA228UA/2K5?
The maximum input bias current is 10 nA.
- What is the maximum input offset voltage of the OPA228UA/2K5?
The maximum input offset voltage is ±75 μV.
- What is the common-mode rejection ratio (CMRR) of the OPA228UA/2K5?
The CMRR is 138 dB.
- What is the open-loop gain of the OPA228UA/2K5?
The open-loop gain is 160 dB.
- What is the operating supply voltage range of the OPA228UA/2K5?
The operating supply voltage range is ±2.5 V to ±18 V.
- In what package is the OPA228UA/2K5 available?
The OPA228UA/2K5 is available in an 8-pin SOIC (D) package.
- What is the operating temperature range of the OPA228UA/2K5?
The operating temperature range is –40°C to +85°C.
