The AD623ARZ is a precision instrumentation amplifier that is widely used for applications requiring accurate differential voltage measurement. It's crucial for engineers and technicians to ensure that the amplifier is functioning correctly, as even small deviations can lead to significant errors in measurements. One of the most common issues encountered with the AD623ARZ is incorrect differential gain. This issue can manifest in several ways, including distortion of the output signal or incorrect readings, which could ultimately lead to flawed system performance.