Comparison of class A amplifiers for low-power and low-voltage switched capacitor applications

Author

Schwoerer, Christoph ; Morche, Dominique ; Senn, Patrice

Author_Institution

France Telecom, CNET, Grenoble, France

fYear

1999

fDate

17-17 Aug. 1999

Firstpage

112

Lastpage

114

Abstract

Owing to their higher output dynamic two-stage amplifiers may become an interesting alternative to cascoded single-stage amplifiers for low voltage switched capacitor applications. Therefore, a comparison of the minimum power consumption of both approaches, based on an optimisation methodology, is presented. It is worked out, which amplifier type should be used to achieve minimum power consumption for a given supply voltage, capacitor ratio and desired settling precision.

Keywords

CMOS analogue integrated circuits; amplifiers; circuit optimisation; low-power electronics; operational amplifiers; switched capacitor networks; CMOS analog design; capacitor ratio; cascoded single-stage amplifiers; class A amplifiers; dynamic two-stage amplifiers; low-power design; low-voltage switched capacitor applications; minimum power consumption; optimisation methodology; settling precision; supply voltage; Charge transfer; Circuit noise; Energy consumption; High power amplifiers; Power amplifiers; Switched capacitor circuits; Switches; Switching circuits; Telecommunication switching; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Low Power Electronics and Design, 1999. Proceedings. 1999 International Symposium on

Conference_Location

San Diego, CA, USA

Print_ISBN

1-58113-133-X

Type

conf

Filename

799424