A high-quality dual-input differentiator

Author

Sarker, U.C. ; Sanyal, S.K. ; Nandi, R.

Author_Institution

Dept. of Electron. & Telecommun. Eng., Jadavpur Univ., Calcutta, India

Volume

39

Issue

5

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

726

Lastpage

729

Abstract

A dual-input ideal differentiator network design with a single resistor-controlled time constant and high-gain operational amplifier (OA) devices is described. At high frequencies, the network becomes functionally nonideal and its quality factor (Q) degrades because of the frequency-dependent gain of the OA. A suitable Q-compensation design that yields a 1:|A|² order of Q improvement at higher frequencies is proposed. The network exhibits high-frequency deemphasis characteristics due to the OA-poles which would suppress the high-frequency noise components

Keywords

Q-factor; compensation; differentiating circuits; operational amplifiers; HF noise suppression; Q-compensation design; active RC network; frequency-dependent gain; high-frequency deemphasis characteristics; high-gain operational amplifier; high-quality dual-input differentiator; quality factor; single resistor-controlled time constant; Chromium; Damping; Degradation; Feedback loop; Frequency dependence; Operational amplifiers; Q factor; Resistors; Stability; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.58615

Filename

58615