The INA103KU is a low-noise, low-distortion instrumentation amplifier manufactured by Texas Instruments. This device is designed for use in voltage-precision measurement applications such as data acquisition systems, medical instrumentation, audio amplifiers, and op-amp buffering.The INA103KU features low non-linearity, high common-mode rejection, low input noise voltage, low-power dissipation, high precision, low cost, and wide dynamic range. The amplifier is exceptionally stable and is designed to work over large temperature ranges of -40°C to +125°C. It offers stable performance under most real-world conditions.The amplifier features a single-ended input stage typically configured to have a gain of 2. The maximum supply voltage for the amplifier is ±12V. It has a single-ended output with an output terminal (FB1) connected to the output of the amplifier. The output voltage is externally adjustable using resistors connected between the FB1 terminal and GND. The gain of the amplifier can also be varied by connecting pins 1 and 2 of U3 to the non-inverting input. The maximum gain of the amplifier is in the range of 0.2 to 100V/V.This amplifier features a wide frequency response and high slew rate. The INA103KU also has good distortion characteristics, low noise levels, and low quiescent current.