Analysis Of Low Offset Operation Amplifier Principles and Its Application Areas

Abstract

While the functionality of traditional operational amplifiers today is no longer sufficient in areas that require high accuracy, low offset operational amplifiers are used in a wide range of applications in today's world. Compared with traditional operational amplifiers, low offset operational amplifiers have a series of advantages such as high precision and high signal-to-noise ratio, and are currently used in ECG signal acquisition, laser ranging, and plant electrical signal acquisition. Low offset op amps can amplify the signal with more accurately, which is advantageous in environments where the acquired signal is weak and the noisy is large, It mainly reduces the system offset by adjusting the input stage circuit (using the three-stage amplification circuit as the preamplifier circuit and using the two-stage amplification to prevent saturation of the preop amp), and improves the manufacturing process to reduce the structural offset to ensure the accuracy of the output signal. In the future, high integration and high accuracy will be the main development direction of operational amplifiers.