7.1 Overview

The OPA2156 is laser trimmed to improve offset and uses a three-gain-stage architecture to achieve very low noise and distortion. The Functional Block Diagram shows a simplified schematic of the OPA2156 (one channel shown). The device consists of a low noise input stage and feed-forward pathway coupled to a high-current output stage. This topology exhibits superior distortion performance under a wide range of loading conditions compared to other operational amplifiers.