In this work, we describe the implementation of an accumulator-based ADPLL on a Virtex 5. The ADPLL includes a Time-to-Digital Converter (TDC) that is based on two delay-lines and an oscillator. The resolution of the TDC is 1ns. The Digitally-Controlled-Oscillator (DCO) in the ADPPLL is implemented with a fixed- frequency oscillator and a digitally-controlled frequency divider. The period of the DCO can be set with a precision of 5ns. A digital filter based on finite difference equations is included in the ADPLL. Equation-based models are reported for all the building-blocks of the ADPLL. Simulated and measured step responses of the PLL are compared.

Modelling and Implementation of an Accumulator-based ADPLL on a Virtex-5

E. Napoli
2012

Abstract

In this work, we describe the implementation of an accumulator-based ADPLL on a Virtex 5. The ADPLL includes a Time-to-Digital Converter (TDC) that is based on two delay-lines and an oscillator. The resolution of the TDC is 1ns. The Digitally-Controlled-Oscillator (DCO) in the ADPPLL is implemented with a fixed- frequency oscillator and a digitally-controlled frequency divider. The period of the DCO can be set with a precision of 5ns. A digital filter based on finite difference equations is included in the ADPLL. Equation-based models are reported for all the building-blocks of the ADPLL. Simulated and measured step responses of the PLL are compared.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/4772785
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact