A Digitally Programmable Rail-to-Rail CMOS Operational Amplifier as Reusable Silicon IP

Hong-Yi Huang; Hsu-Feng Lee

doi:10.6180/jase.2009.12.4.05

A Digitally Programmable Rail-to-Rail CMOS Operational Amplifier as Reusable Silicon IP

Hong-Yi Huang This email address is being protected from spambots. You need JavaScript enabled to view it.¹ and Hsu-Feng Lee²

¹Graduate Institute of Electrical Engineering, National Taipei University, Taipei, Taiwan 104, R.O.C.
²Department of Electronic Engineering, Fu-Jen Catholic University, Taipei, Taiwan 242, R.O.C.

Received: February 9, 2006
Accepted: July 19, 2006
Publication Date: December 1, 2009

Download Citation: ||https://doi.org/10.6180/jase.2009.12.4.05

ABSTRACT

A digitally programmable rail-to-rail CMOS operational amplifier (Op Amp) is designed using standard 0.35 um CMOS process. By using an efficient MOS capacitor is used to compensate the stability of the Op Amp. A compensation current switch is used to adjust the slew rate. Using the schemes, the Op Amp can obtain improved the stability, bandwidth, slew rate and settling time according to the output load.

Keywords: Op Amp, Rail-to-Rail, Programmable

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