Title :
Analysis of a charge-pump PLL: a new model
Author :
Van Paemel, Mark
Author_Institution :
KIHA, Hoboken, Belgium
fDate :
7/1/1994 12:00:00 AM
Abstract :
A new model for the analysis of a second-order charge-pump phase-locked loop (PLL) is described. This model uses a set of difference equations in two well-chosen state variables. It allows one to model exactly the transient behavior of the PLL, even if the loop is out of lock. Theoretical stability and overload limits are determined. A continuous-time approximation is derived. Its validity is verified by simulation examples
Keywords :
approximation theory; difference equations; phase-locked loops; stability; transient response; charge-pump PLL; continuous-time approximation; difference equations; overload limits; second-order PLL; simulation; stability; state variables; transient behavior; Charge pumps; Circuit stability; Detectors; Difference equations; Digital circuits; Filters; Phase detection; Phase locked loops; Voltage control; Voltage-controlled oscillators;
Journal_Title :
Communications, IEEE Transactions on
