Title :
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
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;
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
