Title :
Design of an ultra-low-power current source
Author :
Galeano, Edgar Mauricio Camacho ; Montoro, Carlos Galup ; Schneider, Márcio Cherem
Author_Institution :
Dept. de Engenharia Eletrica, Univ. Fed. de Santa Catarina, Brazil
Abstract :
This paper presents the design of an ultra low-power self-biased current source. We have designed a 400pA current reference in both 1.5μm and 0.35μm CMOS technologies. The association of a very simple topology, an efficient design methodology, and low output conductance trapezoidal transistors has resulted in area of 0.046mm2 and power consumption around of 2nW. Experimental results for the 1.5μm CMOS technology validate the design and show that the current source can operate from supply voltage down to 1.2V with a regulation better than 8%/V of supply voltage.
Keywords :
CMOS integrated circuits; integrated circuit design; low-power electronics; reference circuits; transistors; 0.35 microns; 1.2 V; 1.5 microns; 2 nW; 400 pA; CMOS technologies; current reference; efficient design; low output conductance; power consumption; self-biased current source; trapezoidal transistors; ultra-low-power current source; Analog circuits; CMOS analog integrated circuits; CMOS technology; Design methodology; Energy consumption; Low voltage; MOSFET circuits; Resistors; Semiconductor device modeling; Topology;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328199
