A switched-capacitor Programmable Gain Amplifier optimized for motor control application using correlated double sampling technique

Author

Boas, Andre Vilas ; Lacerda, Fabio ; Olmos, Alfredo

Author_Institution

Freescale Semicond. Inc., Campinas, Brazil

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

1240

Lastpage

1243

Abstract

This paper describes the design of a 12-bit fully differential Switched-Capacitor (SC) Programmable Gain Amplifier (PGA) optimized for motor control application and implemented using Correlated Double Sampling (CDS) technique. The PGA performs differential to single-ended conversion and operates in concert with an Analog-to-Digital Converter (ADC). Fabricated in a standard 4-metal single-poly 0.25um CMOS process, it occupies an area of 0.18mm² with a total dissipation of 450uA and operates from -40°C to 135°C. The circuit has been integrated on Freescale´s MC56F8006 family of Digital Signal Controllers (DSC) along with other on-chip peripherals designed to enhance the performance of motor control and power conversion applications.

Keywords

analogue-digital conversion; differential amplifiers; electric motors; machine control; power convertors; programmable circuits; switched capacitor networks; CMOS process; Freescale´s MC56F8006 family; analog-to-digital converter; correlated double sampling technique; current 450 muA; differential to single-ended conversion; digital signal controllers; fully differential switched-capacitor programmable gain amplifier; motor control; on-chip peripherals; power conversion; size 0.25 mum; temperature -40 C to 135 C; word length 12 bit; Analog-digital conversion; CMOS process; Circuits; Design optimization; Differential amplifiers; Digital control; Electronics packaging; Motor drives; Sampling methods; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Conference_Location

Paris

Print_ISBN

978-1-4244-5308-5

Electronic_ISBN

978-1-4244-5309-2

Type

conf

DOI

10.1109/ISCAS.2010.5537281

Filename

5537281