Texas Instruments

INA331IDGKR  

OP Amps, Buffer Amps ICs

The INA331IDGKR is a high-precision, monolithic instrumentation amplifier designed by Texas Instruments. It is part of the INA33x family of amplifiers, which are known for their high accuracy and low drift characteristics. Here is a description of the INA331IDGKR, including its features and applications:

Description:

The INA331IDGKR is a precision, low-noise, rail-to-rail input and output instrumentation amplifier with an input common-mode voltage range that extends down to the negative supply rail. It is available in an 8-pin SOIC package and offers excellent performance in terms of accuracy, stability, and low power consumption.

Features:

1. High precision: The INA331IDGKR offers high accuracy and low drift, making it suitable for demanding applications that require precise measurements.
2. Low noise: The amplifier has a low input voltage noise of 4.3µVrms and a low output voltage noise of 0.9µVrms, which is beneficial for applications where low-noise performance is critical.
3. Rail-to-rail input and output: The INA331IDGKR can handle input signals that extend down to the negative supply rail and output signals that swing within 10mV of the supply rails, allowing it to work with a wide range of input signals.
4. Low power consumption: The INA331IDGKR operates with a low supply current of 240µA, making it suitable for battery-powered applications or systems where power consumption is a concern.
5. Wide supply voltage range: The amplifier can operate with supply voltages ranging from ±2.5V to ±18V, providing flexibility in system design.
6. High input impedance: The INA331IDGKR has high input impedance, which minimizes the loading effect on the input signal source.
7. Internal frequency compensation: The amplifier includes internal frequency compensation, eliminating the need for external components for stability.

Applications:

1. Medical equipment: The INA331IDGKR is well-suited for use in medical devices that require precise and stable measurements, such as blood pressure monitors, pulse oximeters, and electrocardiogram (ECG) machines.
2. Industrial control systems: The amplifier can be used in industrial control systems for monitoring and controlling various parameters, such as temperature, pressure, and flow.
3. Sensor conditioning: The INA331IDGKR can be used to condition signals from various types of sensors, such as strain gauges, thermocouples, and resistive sensors, providing accurate and stable measurements for further processing.
4. Data acquisition systems: The amplifier can be used in data acquisition systems for capturing and processing signals from various sensors and transducers.
5. Test and measurement equipment: The INA331IDGKR can be used in precision test and measurement equipment, such as oscilloscopes, multimeters, and signal analyzers, where high accuracy and low noise are essential.

In summary, the INA331IDGKR is a high-precision, low-noise instrumentation amplifier that offers excellent performance in terms of accuracy, stability, and low power consumption. It is suitable for a wide range of applications, including medical equipment, industrial control systems, sensor conditioning, data acquisition systems, and test and measurement equipment.

INA331IDGKR Documents

Download datasheets and manufacturer documentation for INA331IDGKR

Datasheets :

INA331,2331      

HTML Datasheet :

INA331,2331