A Compact High Current Efficiency Low-Voltage MOS Transconductor with Nearly Constant Input Voltage Range

Author

Sawigun, Chutham ; Mahattanakul, Jirayuth

Author_Institution

Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok

fYear

2007

fDate

27-30 May 2007

Firstpage

221

Lastpage

224

Abstract

In this paper, a compact MOS linear voltage to current converter is proposed. The proposed transconductor is realized by connecting a simple MOS differential pair to the newly proposed square-root circuits. The resulting circuit is compact, can be operated under low supply voltage and has high current efficiency. The proposed transconductor were simulated by SPICE using model parameter for 0.35 mum fabrication process. The simulation results show that under 1.8V single supply, the proposed transconductor features plusmn0.4V linear range with very high current efficiency of 3.6 V^-1 while consumes 45 muW of quiescent electrical power.

Keywords

CMOS analogue integrated circuits; analogue processing circuits; differential amplifiers; low-power electronics; operational amplifiers; power convertors; 0.35 micron; 1.8 V; 45 muW; MOS differential pair; SPICE model; compact MOS; linear voltage to current converter; low-voltage MOS transconductor; square-root circuits; Circuit simulation; Gain; Joining processes; Kirchhoff´s Law; Low voltage; SPICE; Threshold voltage; Transconductance; Transconductors; Virtual colonoscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378316

Filename

4252611