1.8 V low voltage pseudo-differential input operational amplifier

Author

Wong, Louis S Y

Author_Institution

Cardiac Rhythm Manage. Div., St. Jude Med., Sunnyvale, CA, USA

Volume

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Abstract

This paper describes the design and experimental results of a low voltage 1.8 V pseudo-differential input operational amplifier in a standard CMOS process. A novel pseudo-differential input stage was introduced, which provides a large input common mode range without using any low threshold MOSFET. The chip was fabricated using a 1.2 μm 2-metal 2-poly CMOS technology. The operational amplifier has a measured 80 dB gain, 350 kHz unity gain frequency, and large (± 0.35 V from rails) input common mode voltage range. Its limitations are also discussed.

Keywords

CMOS analogue integrated circuits; differential amplifiers; equivalent circuits; integrated circuit design; linear network synthesis; low-power electronics; operational amplifiers; 1.2 micron; 1.8 V; 2-metal 2-poly CMOS technology; 350 kHz; 80 dB; LV pseudo-differential input op amp; equivalent circuit model; input common mode range; low voltage operational amplifier; pseudo-differential input stage; standard CMOS process; CMOS process; CMOS technology; Differential amplifiers; Equivalent circuits; Frequency; Low voltage; MOSFETs; Operational amplifiers; Rail to rail amplifiers; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on

Print_ISBN

0-7803-7448-7

Type

conf

DOI

10.1109/ISCAS.2002.1009841

Filename

1009841