Institutions | About Us | Help | Gaeilge
rian logo

Go Back
Rail-to-rail op-amp design incorporating negative miller and miller compensation
Zaidi, Muhaned Ali Hussein; Grout, Ian; A'ain, Abu Khari
This paper considers and presents the design of a rail-to-rail input and output CMOS (complementary metal oxide semiconductor) two-stage operational amplifier (op-amp). The design uses two capacitance based compensation techniques for controlling stability and frequency response, the conventional Miller and negative Miller capacitances. The negative Miller capacitance is constructed around the first amplification stage and the conventional Miller capacitance is constructed around the second amplification stage. By setting suitable capacitance values, the conventional Miller and negative Miller capacitances allow the designer to control stability margins and frequency response. The design is based on a low-power design where the first stage consists of complementary differential input and summing circuit, and the second stage is a class-AB amplifier. The design has been created using a 0.35 μm CMOS (n-well) technology, its operation strategy simulated using the Cadence Spectre simulator and operates on a +3.3 V power supply.
Keyword(s): miller Compensation; negative miller; rail-to-rail amplifier; Constant-gm; class AB amplifier
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: University of Limerick
Citation(s): International Journal of Science and Engineering Investigations;7 (73), pp. 26-36
Publisher(s): I.J.S.E.I
First Indexed: 2018-03-23 06:25:21 Last Updated: 2019-02-22 06:39:13