1981•Electronics LettersRequires access

Offset voltage, CMRR and PSRR of a long-tailed pair: an integrated approach

B.L. Hart

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.

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Key concepts: Power supply rejection ratio, Common-mode rejection ratio, Input offset voltage, Offset (computer science), Common-mode signal, Voltage, Electrical engineering, Electronic engineering