Title :
Linearized discrete-time model of higher order Charge-Pump PLLs
Author :
Bi, Chuang ; Curran, Paul F. ; Feely, Orla
Author_Institution :
Sch. of Electr., Electron. & Mech. Eng., Univ. Coll. Dublin, Dublin, Ireland
Abstract :
In this paper, we derive linearized discrete-time models of higher order Charge-Pump Phase-Locked Loops (CPPLLs). The behaviour of CP-PLLs in the steady state is analysed and an important feature is developed. The nonlinear state equations of CP-PLLs are linearized around the equilibrium point. The linearized discrete-time model is finally verified using behavioral simulations in Matlab and PSpice.
Keywords :
SPICE; charge pump circuits; phase locked loops; Matlab; PSpice; higher order charge-pump PLL; linearized discrete-time model; nonlinear state equations; steady state; Charge pumps; Equations; Integrated circuit modeling; Mathematical model; Phase locked loops; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Circuit Theory and Design (ECCTD), 2011 20th European Conference on
Conference_Location :
Linkoping
Print_ISBN :
978-1-4577-0617-2
Electronic_ISBN :
978-1-4577-0616-5
DOI :
10.1109/ECCTD.2011.6043385
