Instrumentation Amplifier

Instrumentation amplifiers are high-precision gain modules with differential inputs and outputs that can be either differential or single-ended relative to a reference terminal. The input terminals feature high impedance, allowing direct connection to sensors. These devices amplify the difference between the two input signal voltages while rejecting any signals common to both inputs. Instrumentation amplifiers are widely used in various industrial, measurement, data acquisition, and medical applications that require maintaining DC and gain accuracy in high-noise environments and suppressing large common-mode signals, such as AC power line frequencies. This series of instrumentation amplifiers (INA) includes traditional external gain setting options, while innovatively offering fixed gain to further save system space. The internal resistor network provides superior matching performance, better temperature synchronization, and enhanced common-mode rejection.