Title :
Simulating nonlinear capacitors in sigma-delta modulators
Author :
Marechal, Sylvain ; Krummenacher, Francois ; Kayal, Maher
Author_Institution :
Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
This paper addresses the simulation of switched-capacitor circuits including capacitor nonlinearities at an intermediate modelling level, filling the gap between device level and behavioural level simulators. Starting with the resolution of the trivial case of integrator with ideal components, the impact of first- and higher-order capacitor nonlinearities is analyzed in detail and the related simulation approach is explained. As an application example, the expectable performance of a simulated incremental second-order ΣΔ converter is given.
Keywords :
capacitors; integrating circuits; sigma-delta modulation; switched capacitor networks; behavioural level simulators; device level simulators; first-order capacitor nonlinearities; higher-order capacitor nonlinearities; integrator; nonlinear capacitors; second-order ΣΔ converter; sigma-delta modulators; switched-capacitor circuits; Biological system modeling; Capacitors; Equations; Integrated circuit modeling; Mathematical model; Modulation; Switches;
Conference_Titel :
Electronics, Circuits, and Systems (ICECS), 2013 IEEE 20th International Conference on
Conference_Location :
Abu Dhabi
DOI :
10.1109/ICECS.2013.6815474
