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

Volume

3

fYear

1992

fDate

10-13 May 1992

Firstpage

1380

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.1992.230246

Filename

230246