Title :
Noise performance of operational amplifier circuits
Author :
Trofimenkoff, F.N. ; Onwauchi, O.A.
Author_Institution :
Dept. of Electr. Eng., Calgary Univ., Alta., Canada
fDate :
2/1/1989 12:00:00 AM
Abstract :
A method for calculating the total noise voltage at the output of inverting and noninverting amplifiers modeled using one- and two-pole differential gain expressions for the operational amplifier is developed. This method is adapted to deal with the case of a low-pass filter stage constructed using an operational amplifier modeled by a one-pole differential gain expression. The results obtained are presented in tabular form for convenient analysis and provide a basis for producing amplifier designs with improved noise performance
Keywords :
active filters; electron device noise; low-pass filters; operational amplifiers; semiconductor device models; designs; differential gain expressions; low-pass filter; noise performance; noise voltage; operational amplifier circuits; semiconductor device models; Circuit noise; Closed-form solution; Differential amplifiers; Impedance; Low pass filters; Low-frequency noise; Low-noise amplifiers; Operational amplifiers; Resistors; Voltage;
Journal_Title :
Education, IEEE Transactions on
