Title :
Charge-pump based switched-capacitor integrator for ΔΣ modulators
Author :
Nilchi, Alireza ; Johns, David A.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
A low power switched-capacitor (SC) integrator based on a capacitive charge-pump (CP) is proposed. The CP integrator circuit consumes approximately a quarter of the power of a conventional SC integrator while maintaining the same thermal noise performance. Power consumption of the CP integrator is analysed and compared with a conventional parasitic-insensitive integrator. Simulation results verifying the thermal noise and settling performance of the CP integrator are also provided.
Keywords :
charge pump circuits; delta-sigma modulation; low-power electronics; switched capacitor networks; thermal noise; ???? modulator; CP integrator circuit; SC integrator; capacitive charge-pump; low power switched-capacitor integrator; parasitic-insensitive integrator; power consumption; thermal noise performance;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.0245
