Overview
The OPA2251UAG4 is a precision operational amplifier manufactured by Texas Instruments. This model is part of the OPAx251 series, known for its low noise, low offset voltage, and high precision. It is designed for applications requiring high accuracy and stability, making it suitable for industrial, automotive, and instrumentation markets. The OPA2251UAG4 stands out for its low quiescent current and wide supply voltage range, making it a competitive choice for battery-powered and energy-efficient systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage Range | ±2.25 to ±18 | V | Dual Supply |
| Input Offset Voltage | ±10 | µV | Max |
| Input Bias Current | ±10 | pA | Typical |
| Quiescent Current | 1.1 | mA | Per Amplifier |
| Gain Bandwidth Product | 10 | MHz | Typical |
| Slew Rate | 20 | V/µs | Typical |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | SOIC-8 | Surface Mount |
Key Features
- Low noise: 7.5 nV/√Hz at 1 kHz
- Low offset voltage: ±10 µV (max)
- Wide supply voltage range: ±2.25 V to ±18 V
- Low quiescent current: 1.1 mA per amplifier
- High gain bandwidth product: 10 MHz
- Rail-to-rail output
- Stable with capacitive loads up to 300 pF
Applications
The OPA2251UAG4 is ideal for precision applications such as signal conditioning, active filtering, and sensor amplification. Its low noise and high accuracy make it suitable for medical instrumentation, test and measurement equipment, and industrial control systems. Additionally, its low power consumption and wide supply range are advantageous for portable and battery-powered devices, including data acquisition systems and handheld meters.
Q & A
1. What is the typical input bias current of the OPA2251UAG4?
The typical input bias current is ±10 pA.
2. Can the OPA2251UAG4 operate on a single supply?
Yes, it can operate on a single supply as low as 4.5 V.
3. What is the maximum supply voltage for the OPA2251UAG4?
The maximum supply voltage is ±18 V for dual supplies.
4. Is the OPA2251UAG4 suitable for low-noise applications?
Yes, it features a low noise density of 7.5 nV/√Hz at 1 kHz.
5. What is the operating temperature range of the OPA2251UAG4?
It operates from -40°C to 125°C.
6. Does the OPA2251UAG4 support rail-to-rail output?
Yes, it supports rail-to-rail output.
7. What is the typical slew rate of the OPA2251UAG4?
The typical slew rate is 20 V/µs.
8. Can the OPA2251UAG4 drive capacitive loads?
Yes, it is stable with capacitive loads up to 300 pF.
9. What package does the OPA2251UAG4 come in?
It is available in an SOIC-8 package.
10. Is the OPA2251UAG4 suitable for battery-powered devices?
Yes, its low quiescent current and wide supply range make it ideal for battery-powered applications.
