Texas Instruments

INA326EA/250

The INA326EA/250 is a precision, low-power, monolithic instrumentation amplifier designed by Texas Instruments. It is available in an 8-pin SOIC package and is ideal for a wide range of applications that require accurate and stable amplification of small differential signals.

Description:

The INA326EA/250 is a high-performance, low-noise, and low-drift instrumentation amplifier that offers excellent common-mode rejection ratio (CMRR) and input impedance. It is designed to provide precise amplification of small differential signals in the presence of large common-mode signals.

Features:

1. Wide input voltage range: The INA326EA/250 can accept input voltages from ±5V to ±16V, making it suitable for a variety of applications.
2. Low input bias current: The input bias current is typically 1pA, which helps maintain the integrity of the input signal and minimizes the impact of the amplifier on the signal source.
3. High common-mode rejection ratio (CMRR): The CMRR is typically 120dB, which ensures that the amplifier can accurately amplify the differential signal while rejecting common-mode interference.
4. Low noise: The input voltage noise is typically 4.3µV/√Hz, which is suitable for applications requiring low-noise amplification.
5. Low power consumption: The INA326EA/250 operates with a supply current of typically 70µA, making it suitable for battery-powered applications.
6. High input impedance: The input impedance is typically 10TΩ, which minimizes the loading effect on the input signal source.

Applications:

1. Medical instrumentation: The INA326EA/250 can be used to amplify small biopotential signals, such as EEG, ECG, or EMG, with high accuracy and low noise.
2. Strain gauge amplifiers: The high CMRR and low drift make it suitable for amplifying signals from strain gauges in force or pressure measurement applications.
3. Temperature sensing: The INA326EA/250 can be used to amplify the small differential signals from thermocouples or resistance temperature detectors (RTDs) for accurate temperature measurements.
4. Bridge amplifiers: The INA326EA/250 can be used to amplify signals from load cells, pressure sensors, or other types of bridge sensors.
5. Industrial control systems: The low-noise and low-drift characteristics make it suitable for use in industrial control systems where precise signal amplification is required.

In summary, the INA326EA/250 is a versatile and high-performance instrumentation amplifier that offers excellent accuracy, low noise, and low power consumption. It is suitable for a wide range of applications where precise amplification of small differential signals is required.