A Family of Low-Voltage Bulk-Driven CMOS Continuous-Time CMFB Circuits

Author

Carrillo, Juan M. ; Torelli, Guido ; Domínguez, Miguel A. ; Pérez-Aloe, Raquel ; Valverde, José M. ; Duque-Carrillo, J. Francisco

Author_Institution

Dept. of Electron., Univ. of Extremadura, Badajoz, Spain

Volume

57

Issue

11

fYear

2010

Firstpage

863

Lastpage

867

Abstract

This brief introduces four different structures for implementing a continuous-time common-mode feedback (CMFB) network for fully differential (FD) amplifiers. The proposed circuits use bulk-driven MOS transistors, thus representing a low-voltage realization of their gate-driven counterparts. The CMFB circuits were included in a 1.5-V FD buffer implemented in standard 0.35-μm CMOS technology. Experimental results illustrate the performance of the proposed schemes, demonstrating their suitability to operate with a low supply voltage.

Keywords

CMOS analogue integrated circuits; MOSFET; circuit feedback; differential amplifiers; low-power electronics; CMFB network; CMOS technology; bulk-driven MOS transistors; continuous-time common-mode feedback network; fully differential amplifiers; low-voltage bulk-driven CMOS continuous-time CMFB circuits; low-voltage realization; supply voltage; CMOS integrated circuits; Delta modulation; Detectors; Linearity; Logic gates; MOSFETs; Bulk-driven MOS transistors; CMOS analog integrated circuits; common-mode feedback (CMFB); fully differential amplifiers; 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.2010.2068090

Filename

5606194