A CMOS current divider
In this article, a simple circuit is proposed to implement the division of one current by another. This circuit is composed of two MOS transistors, a voltage comparator, and two capacitors. The divider operates well in a weak current range. Using a 1.5 /spl mu/m single-poly CMOS technology, the proposed circuit occupies a silicon area of approximately 30 /spl mu/m/spl times/40 /spl mu/m.