Title :
A general relationship between amplifier parameters, and its application to PSRR improvement
Author :
Säckinger, Eduard ; Goette, Josef ; Guggenbühl, Walter
fDate :
10/1/1991 12:00:00 AM
Abstract :
A general relationship between the gains of multiterminal amplifiers is derived. This approach generates a constraint for the simultaneous improvement of the common-mode and the power-supply rejection ratio of the simple operational amplifier. This constraint can be relaxed by either adding a supplementary input terminal to the amplifier circuit or using a fully differential design. The method can be used to improve the power-supply rejection ratios in operational amplifiers. Several implementations of a two-stage operational amplifier illustrate this technique
Keywords :
network parameters; operational amplifiers; CMRR; PSRR improvement; amplifier parameters; fully differential design; multiterminal amplifiers; operational amplifier; power-supply rejection ratio; supplementary input terminal; Circuits; Differential amplifiers; Frequency; Gain measurement; Impedance measurement; Laboratories; Operational amplifiers; Power amplifiers; Transfer functions; Voltage;
Journal_Title :
Circuits and Systems, IEEE Transactions on
