Title :
A 1 volt simplified comparator with nonlinear class-AB driver and rail-to-rail output stage
Author :
Grootveld, Cornelis J. ; Fonderie, Jeroen ; Huijsing, Johan H.
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands
Abstract :
A voltage comparator is described which can operate at a power supply down to 1 V and has a rail-to-rail class-AB output stage. The circuit consists of only 43 transistors and has a quiescent current of 160 μA. The circuit is intended as an on-chip building block. The comparator is integrated in a standard semicustom BICMOS process with lateral PNPs. In this process a response time of 500 ns is achieved. The comparator has been made with ft=3 GHz at 1 mA for the NPN transistors and ft=20 MHz at 20 μA for the lateral PNP transistors
Keywords :
BiCMOS integrated circuits; application specific integrated circuits; comparators (circuits); linear integrated circuits; 1 V; 1 mA; 160 muA; 20 MHz; 20 muA; 3 GHz; NPN transistors; lateral PNP transistors; nonlinear class AB driver; quiescent current; rail-to-rail output stage; response time; semicustom BICMOS process; voltage comparator; Analog integrated circuits; BiCMOS integrated circuits; Delay; Driver circuits; Instruments; Integrated circuit technology; Power supplies; Rail to rail outputs; Resistors; Voltage;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230246
