Bipolar operational amplifier powered by a 1 V battery

Author

Mavretic, A. ; Jenko, M.

Author_Institution

Dept. of Electr., Comput. & Syst. Eng., Boston Univ., MA, USA

fYear

1991

Firstpage

274

Abstract

The design of a micropower op amp suitable for biomedical applications is presented. A 1-V battery is used for powering the circuit. The quiescent power consumption is under 300 μA. Current boosting is employed to achieve a maximal output swing very close to the power supply rails for low impedance loads. The input stage consists of p-n-p transistors in differential configuration. The gain stage is a common emitter amplifier with n-p-n transistors. The output stage is a class AB amplifier with both n-p-n and p-n-p transistors driven by unique current amplifiers

Keywords

bipolar integrated circuits; differential amplifiers; linear integrated circuits; operational amplifiers; 1 V; biomedical applications; class AB amplifier; common emitter amplifier; current amplifiers; current boosting; differential configuration; gain stage; input stage; micropower op amp; monolithic IC; n-p-n transistors; operational amplifier; output stage; p-n-p transistors; quiescent power consumption; Batteries; Circuits; Energy consumption; Impedance; Operational amplifiers; Power amplifiers; Power supplies; Temperature; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean

Conference_Location

LJubljana

Print_ISBN

0-87942-655-1

Type

conf

DOI

10.1109/MELCON.1991.161830

Filename

161830