Title :
A low-offset low-voltage CMOS op amp with rail-to-rail input and output ranges
Author :
Holzmann, Peter J. ; Wiegerink, Remco J. ; Gierkink, Sander L J ; Wassenaar, Roelof F. ; Stroet, Peter
Author_Institution :
MESA Res. Inst., Twente Univ., Enschede, Netherlands
Abstract :
A low voltage CMOS op amp is presented. The circuit uses complementary input pairs to achieve a rail-to-rail common mode input voltage range. Special attention has been given to the reduction of the op amp´s systematic offset voltage. Gain boost amplifiers are connected in a special way to provide not only an increase of the low-frequency open-loop gain but also a significant reduction of the systematic offset voltage
Keywords :
CMOS analogue integrated circuits; operational amplifiers; complementary input pair; gain boost amplifier; low-frequency open-loop gain; low-offset low-voltage CMOS op amp; rail-to-rail common mode input voltage range; systematic offset voltage; Circuits; Differential amplifiers; Low voltage; MOSFETs; Mirrors; Operational amplifiers; Power supplies; Rail to rail inputs; Tail; Threshold voltage;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539838
