1.5-V current-mode CMOS true RMS-DC converter based on class-AB transconductors

Author

De La Cruz-Blas, Carlos A. ; López-Martín, Antonio ; Carlosena, Alfonso ; Ramírez-Angulo, Jaime

Author_Institution

Dept. of Electr. & Electron. Eng., Public Univ. of Navarra, Pamplona, Spain

Volume

52

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

376

Lastpage

379

Abstract

A current-mode CMOS RMS-DC converter is presented. The basic building blocks are based on a novel approach to design current-mode computational cells. In such an approach, the large-signal V-I characteristic of class-AB transconductors is conveniently exploited leading to a very regular and compact implementation. A proper biasing scheme in such transconductors allows operation with supply voltage as low as V_GS+2V_DSsat. Measurement results from a practical prototype are presented in order to demonstrate the technique proposed here.

Keywords

CMOS analogue integrated circuits; current-mode circuits; power convertors; 1.5 V; CMOS integrated circuits; RMS-DC converter; class-AB transconductors; current-mode circuits; current-mode computational cells; current-mode squarer/divider; CMOS process; Circuits; Gain control; Low pass filters; Low voltage; Proposals; Prototypes; Silicon; Transconductors; Voltage control; Current-mode circuits; rms–dc converter; very low voltage;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2005.850429

Filename

1468334