Title :
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
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;
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
DOI :
10.1109/ISCAS.2007.378316
