Title :
A novel wide-band CMOS current amplifying cell and its application in power supply current monitoring
Author :
Dragic, S. ; Filanovsky, I.M. ; Margala, M.
Author_Institution :
Dept. of Electr. & Comp. Eng., Alberta Univ., Edmonton, Alta., Canada
fDate :
6/23/1905 12:00:00 AM
Abstract :
A new wide-band current amplifying cell based on a modified current conveyor is implemented in 0.18 μ CMOS technology process. The dc and the small-signal ac gains of the cell depend on transistor dimensions only. The cell transfer function for current, its input impedance, and transimpedance are analyzed, and the frequency compensation for optimization of the frequency response is provided. Finally, the cell is effectively employed in a proposed scheme for the high frequency power supply current monitoring. The gain-bandwidth product of the monitor is extended to 3.46 GHz with the low frequency current gain of 51 dB
Keywords :
CMOS analogue integrated circuits; compensation; current conveyors; frequency response; power supply circuits; wideband amplifiers; 0.18 micron; 51 dB; cell transfer function; current conveyor; dc gain; frequency compensation; frequency response; gain-bandwidth product; input impedance; power supply current monitoring; small-signal ac gain; transimpedance; wideband CMOS current amplifying cell; CMOS process; CMOS technology; Current supplies; Frequency response; Gain; Impedance; Monitoring; Power supplies; Transfer functions; Wideband;
Conference_Titel :
Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on
Print_ISBN :
0-7803-7057-0
DOI :
10.1109/ICECS.2001.957654
