Overview
The OPA4251UA is a quad, micro power operational amplifier produced by Texas Instruments. It is part of the OPAx251 family, which is optimized for high-power supplies. These amplifiers are specifically designed for battery-powered, portable applications, offering very low power consumption and high performance characteristics such as low offset voltage, rail-to-rail output swing, high common-mode rejection, and high open-loop gain. The OPA4251UA is available in a 14-pin SOIC (D) package and is suitable for a wide range of single-supply and dual-supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 14-SOIC (D) |
| Pins | 14 |
| Operating Temperature Range (°C) | -40 to 85 |
| Supply Voltage (Single/Dual) | 2.7V to 36V, ±1.35V to ±18V |
| Input Bias Current | 4nA |
| Input Offset Voltage | ±250µV max |
| Supply Current | 25µA |
| Output Current per Channel | 50mA |
| Common-Mode Rejection Ratio | 124dB |
| Open-Loop Gain | 128dB |
| Slew Rate | 0.01 V/µs |
| Gain Bandwidth Product | 35kHz |
| Mounting Type | Surface Mount |
Key Features
- Micro power consumption: 25µA per amplifier
- Single-supply operation with a wide supply range: 2.7V to 36V and dual supply: ±1.35V to ±18V
- Rail-to-rail output swing within 50mV of the supply rails
- Low offset voltage: ±250µV max
- High common-mode rejection ratio: 124dB
- High open-loop gain: 128dB
- Unity-gain stable and capable of driving large capacitive loads
- External trim pins available for single versions
Applications
The OPA4251UA is ideal for battery-powered, portable applications due to its low power consumption and high performance characteristics. It is suitable for a variety of applications including:
- Portable medical devices
- Handheld instruments
- Battery-powered industrial equipment
- Aerospace and defense systems
- Automotive electronics
Q & A
- What is the package type of the OPA4251UA?
The OPA4251UA is packaged in a 14-pin SOIC (D) package.
- What is the operating temperature range of the OPA4251UA?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the OPA4251UA?
The supply voltage range is 2.7V to 36V for single supply and ±1.35V to ±18V for dual supply.
- What is the input bias current of the OPA4251UA?
The input bias current is 4nA.
- What is the maximum input offset voltage of the OPA4251UA?
The maximum input offset voltage is ±250µV.
- What is the slew rate of the OPA4251UA?
The slew rate is 0.01 V/µs.
- Is the OPA4251UA unity-gain stable?
Yes, the OPA4251UA is unity-gain stable and can drive large capacitive loads.
- What is the gain bandwidth product of the OPA4251UA?
The gain bandwidth product is 35kHz.
- Is the OPA4251UA RoHS compliant?
Yes, the OPA4251UA is RoHS compliant and lead-free.
- What are some typical applications for the OPA4251UA?
Typical applications include portable medical devices, handheld instruments, battery-powered industrial equipment, aerospace and defense systems, and automotive electronics.
