Title :
High performance CMOS current comparator
Author :
Tang, A.T.K. ; Toumazou, Christofer
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London
fDate :
1/6/1994 12:00:00 AM
Abstract :
A new high-speed CMOS current comparator is described. By changing the buffer of an existing comparator from class B to class AB operation, voltage swings are reduced, resulting in greater speed for small input currents. Simulation results employing a 1.6μm CMOS technology show the response time to a 0.1μA input current to be 11ns and the power dissipation to be 1.4mW, resulting in a five times improvement in speed/power ratio over existing high-speed current comparators
Keywords :
CMOS integrated circuits; buffer circuits; comparators (circuits); 0.1 muA; 1.4 mW; 1.6 micron; 11 ns; CMOS current comparator; class AB buffer operation; input currents; power dissipation; response time; speed/power ratio; voltage swings;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940003
