A pseudo rail-to-rail chopper-stabilized instrumentation amplifier in 0.13 µm CMOS

Author

Ge, Fuding

Author_Institution

Intel Corp., Chandler, AZ, USA

fYear

2009

fDate

2-5 Aug. 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents a CMOS chopper-stabilized instrumentation amplifier based on a compact differential difference amplifier (DDA). The DDA itself is based on a high gain and robust two-stage class-AB amplifier. Simulation results show that with chopping frequency at 250 KHz, both the noise density and offset can be reduced by a factor of 10. Detailed practical application considerations of the proposed In-Amp as a current-sensing amplifier in a power management chip are presented.

Keywords

CMOS integrated circuits; choppers (circuits); instrumentation amplifiers; CMOS; In-Amp; chopping frequency; current-sensing amplifier; differential difference amplifier; frequency 250 kHz; noise density; power management chip; pseudo rail-to-rail chopper-stabilized instrumentation amplifier; simulation result; size 0.13 mum; two-stage class-AB amplifier; CMOS technology; Choppers; Circuits; Differential amplifiers; Frequency; Instruments; Noise robustness; Power supplies; Rail to rail amplifiers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on

Conference_Location

Cancun

ISSN

1548-3746

Print_ISBN

978-1-4244-4479-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2009.5236166

Filename

5236166