Title :
Simulation of Δ-Σ modulators using behavioral models
Author :
Wolff, Christopher M. ; Carley, L. Richard
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
A Δ-Σ modulator (DSM) simulator developed to aid in rapid evaluation of the design tradeoffs among different DSM topologies is discussed. Circuit nonidealities are parameterized in the simulator by using behavioral models for the loop filter and comparator. The accuracy and speed of the approach are shown to compare favorably with those of circuit simulation. It is shown that the transient response of a switched-capacitor integrator can be approximated with some accuracy with a straightforward set of explicit equations
Keywords :
analogue-digital conversion; circuit analysis computing; delta modulation; modulators; switched capacitor networks; ADC; DSM topologies; behavioral models; comparator; delta sigma modulators; design tradeoffs; loop filter; rapid evaluation; set of explicit equations; switched-capacitor integrator; transient response; Circuit simulation; Clocks; Delta modulation; Filters; Operational amplifiers; Poles and zeros; Switched capacitor networks; Switches; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112047
