Quad-input current-mode asymmetric cell (CMAC) with error correction applications in single-ended and balanced audio amplifiers

An amplifier topology is introduced that functions principally in a current-steering mode and wide bandwidth and low distortion. The cell can accomodate an additional difference port and thus finds application in a range of audio amplifier incorporating error correction. The cell topology and its properties are described and methods of error correction are reviewed where it is shown that the new topology can be used in both single-ended and balanced power amplifiers