A regulated body-driven CMOS current mirror for low-voltage applications

Author

Zhang, Xuguang ; El-Masry, Ezz I.

Author_Institution

Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada

Volume

51

Issue

10

fYear

2004

Firstpage

571

Lastpage

577

Abstract

A CMOS current mirror (CM) based on the body-driven technique and active feedback scheme is presented. The proposed CM is immune to the threshold voltage limitation and offers much higher accuracy over wider current operating range than other body-driven CMs. The complete analysis of the input-output characteristics, system dc current transfer error, frequency, and noise performance is provided. By using a 1.5V/1V single power supply and 0.18-μm n-well process, SPECTRE simulation results validate the analytical results and the overall good performance in terms of wider input-output voltage swing, lower input resistance, and larger output resistance compared with the conventional high-swing cascode CM.

Keywords

CMOS analogue integrated circuits; circuit feedback; current mirrors; integrated circuit design; integrated circuit noise; 0.18 micron; 1 V; 1.5 V; CMOS current mirror; SPECTRE simulation; active feedback scheme; analog circuits; circuit design; circuit theory; dc current transfer error; input-output voltage swing; low-voltage applications; n-well process; operating range; regulated body-driven technique; signal processing; threshold voltage limitation; CMOS technology; Circuit topology; Collision mitigation; Feedback; Frequency; Immune system; MOSFET circuits; Mirrors; Performance analysis; Threshold voltage; Analog circuits and signal processing; CMOS current mirrors; CMs; circuit theory and design; integrated electronics;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2004.834536

Filename

1344254