Title :
Offset voltage, CMRR and PSRR of a long-tailed pair: an integrated approach
Author_Institution :
Faculty of Engineering, North East London Polytechnic, School of Electrical & Electronic Engineering, Dagenham, UK
Abstract :
An integrated treatment of the input offset-voltage Vos, common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) of a simple resistively loaded bipolar differential amplifier establishes the basic theoretical relationships between these parameters and indicates that `Early-voltage¿ mismatch of the constituent devices limits the attainable CMRR and PSRR.
Keywords :
bipolar transistor circuits; differential amplifiers; linear network analysis; network parameters; CMRR; Early voltage mismatch; PSRR; common mode rejection ratio; input offset voltage; long-tailed pair; power supply rejection ratio; resistivity loaded bipolar differential amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810376
