Title :
A highly linear and high gain operational amplifier
Author :
Chakraborty, Subhra ; Pandey, Abhishek ; Nath, Vijay
Author_Institution :
Electronics and Communication Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India, Pin-835215
Abstract :
In this paper a novel high gain Op-Amp design is presented. This Proposed circuit also exhibits high linearity. The Architecture of the Op-Amp presented in this paper is based on cross-coupled differential pair and positive feedback. The proposed Op-Amp is designed in 0.18µm CMOS process using UMC90nm library in Cadence virtuoso analog design environment. The simulation of proposed circuit results in 124dB gain, 307MHz UGB and 69 degree phase margin while dissipating 221µW power. The THD analysis of the circuit shows a maximum distortion of 63dB at 2V output peak-to peak voltage and 1KHz frequency.
Keywords :
CMOS integrated circuits; Differential amplifiers; Distortion; Gain; Linearity; Power harmonic filters; Transistors; CMOS Op-Amp; Cross-Coupled Differential pair; High Gain; High Linearity; Low Distortion; Positive Feedback;
Conference_Titel :
Electrical, Electronics, Signals, Communication and Optimization (EESCO), 2015 International Conference on
Conference_Location :
Visakhapatnam, India
Print_ISBN :
978-1-4799-7676-8
DOI :
10.1109/EESCO.2015.7253641
