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1 International Journal of Electronics and Telecommunications

1 2012

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A Precise and High Speed Charge-Pump PLL Model Based on SystemC/SystemC-AMS

Ma K., Van Leuken R., Vidojkovic M., Romme J., Rampu S., Pflug H., Huang L., Dolmans G.

International Journal of Electronics and Telecommunications

2012

Vol. 58, No. 3

225-232

The Phase Locked Loop (PLL) has become an important part of electrical systems. When designing a PLL, an efficient and reliable simulation platform for system evaluation is needed. However, the closed loop simulation of a PLL is time consuming. To address this problem, in this paper, a new PLL model containing both digital and analog parts based on SystemC/SystemC-AMS (BETA version) is presented. Many imperfections such as Voltage Control Oscillator (VCO) noise or reference jitter are included in this model. By comparing with the Matlab model, the SystemC/SystemC-AMS model can dramatically reduce simulation time. Also, by comparing with Analog Devices ADI SimPLL simulation results, Cadence simulation results and real measurement results, the accuracy of the SystemC/SystemC-AMS model is demonstrated. The paper shows the feasibility of a unified design environment for mixed-signal modelling based on SystemC/SystemC-AMS in order to reduce the cost and design time of electrical systems.