Pll design tutorial pdf

You will see several different pll examples, including. Phase locked loop control of inverters in a microgrid. Note that the frequency of the pll, the vertical axis, shows a 50 % overshoot. Analog building blocks on a mostly digital chip pose design and verification. Click on the plldesign icon created during the installation process. The pll design assistant package is provided as a selfextracting executable file for windows 2000xp. My philosophy for learning algorithms wasis picking algorithms that are easy to learn even if it might mean it is more movesslower so many of.

A 45nm soi dual pll processor clock system for multiprotocol io presentation slides adobe pdf version 1. Design ofmonolithic phaselockedloops and clock recovery. For more information on the options available in these pages, refer to the quartus ii handbook. A phaselocked loop pll is a negative feedback system that. This tutorial discusses design and testing of rf integrated circuits rfic. We try to double that frequency to make them even larger. Tutorial design flow restore the tutorial files if this tutorial has been previously run on your system, use the following procedure to restore the original tutorial files. I discuss a pll model whose reference input is a sinusoid rather than a phase in part 3. Lecture 8 frequency synthesizer pll auburn university.

Modeling of digital pll dpll in the discretetime domain zdomain so far, all the modeling shown is in the continuoustime domain. The data clock is generated by using a phase locked loop pll as a frequency synthesizer. Tutorial implementation and design of pll and enhanced. Closed loop pll design approach classical open loop approachindirectly design gf using bode plots of af proposed closed loop approachdirectly design gf by examining impact of its specifications on phase noise and settling time solve for af that will achieve desired gf implemented in pll design assistant software lau and perrott. A phaselocked loop is a feedback system combining a voltage controlled oscillator vco and a phase comparator so connected that the oscillator maintains a constant phase angle relative to a reference signal. That is also high frequency pll, but it is not high enough.

An alldigital phaselocked loop adpll for highspeed clock generation is presented. Vlsi circuits tutorial, 1996 razavi, vlsi circuits tutorial, 2000. This model can be applied directly to an analog pll. Design of digital pll using optimized phase noise vco article pdf available in international journal of vlsi design and communication systems 74. The classical voltage phase detector in the past, active filters have been emphasized for several reasons that are explained in. Pll algorithms permutation of last layer developed by feliks zemdegs and andy klise algorithm presentation format suggested algorithm here alternative algorithms here pll case name probability 1x permutations of edges only r2 u r u r u r u r u r y2 r u r u r u r u r u r2 ub probability 118. A 45nm soi dualpll processor clock system for multiprotocol io presentation slides adobe pdf version 1. This tutorial describes several conventional pll blocks as well as enhanced pll epll blocks implemented in psim for singlephase and threephase applications.

Phaselocked loop design fundamentals nxp semiconductors. Tutorial implementation and design of pll and enhanced pll blocks. Tutorial implementation and design of pll and enhanced pll. Well show how topdown pll design works in practice and provide examples of this method in use for commercial pll design. Lecture 090 pll design equations and pll measurements reference 2, previous. The proposed adpll architecture uses both a digital control mechanism and a ring oscillator and, hence, can. W loopcomponents power, ieee symposium on vlsi circuits, pp.

Bandwidth is the frequency at which the pll begins to lose lock with the reference 3db. The pll forms the basis of a number of rf systems including the indirect frequency synthesizer, a form of fm demodulator and it enables the recovery of a stable continuous carrier from a pulse waveform. Chapter 1 introduction about this guide this document provides an introduction to us ing the xilinx vivado design suite flow for. This tutorial deals with the analysis and design of monolithic plls and crcs. Threephase pll design a block diagram displaying the functional components of a generic pll is shown in figure 3. Apr 01, 20 pll simulations are often slow, lengthening project development time. A bibliography is included for those who desire to pursue the theoretical aspect. Since the scope of this article is practical in nature all theoretical derivations have been omitted, hoping to simplify and clarify the content. The standard analog pll implementation is problematic in many applications. Figure 6 shows that it takes 514 microseconds to change the frequency from 1675 mhz to 1735 mhz hz. The data integrity that the serdes o ers is predominantly due to the clock and data recovery circuit cdr employed within the design. It is suitable for engineers who plan work on rfic but did not have training in that area, those who work on ic design and wish to sharpen their understanding of modern rfic design and test methods, and engineering managers.

Normally, the output responses of a discretetime control system are also functions of continuoustime. Phaselocked loop design fundamentals application note, rev. Phaselocked loops plls for short go back to 1932 when. A simple test circuit is used to show the basic waveforms of the pll block. For small deviations, standard simplifying assumptions 7 allow the pll to be modeled according to the linear block diagram of figure 4, where t is the phase of the measured voltage and p is the phase estimate given by the pll.

Rfic design and testing for wireless communications. These tools model feedback efficiently, allow analog and digital components to be simulated together, and have abstract. First time, every time practical tips for phase locked. The phase locked loop, pll is a very useful building block, particularly for radio frequency applications. It steps up the clock frequency of a crystal clock to that of the data rate.

Perrott 32 closed loop pll design approach classical open loop approachindirectly design gf using bode plots of af proposed closed loop approachdirectly design gf by examining impact of its specifications on phase noise and settling time solve for af that will achieve desired gf implemented in pll design assistant software lau and perrott. Pll acts as a lowpass filter with respect to the reference. Plls and dlls cmos vlsi designcmos vlsi design 4th ed. Hop time pll synthesizer practical considerations capacitors an important part of the loop filter design is the use of components that will not degrade the. In the lab assignment 5, this pll will be used to design a data modem based on a digital. How to design and debug a phaselocked loop pll circuit. Fundamentals of phase locked loops plls fundamental phase locked loop architecture. My philosophy for learning algorithms wasis picking algorithms that are easy to learn even if it might mean it is more movesslower so many of my algorithms build on each other. Highfrequency reference jitter is rejected lowfrequency reference modulation e. Pll simulations are often slow, lengthening project development time. The spectrerf noiseaware pll design flow is described in the following document. May 20, 2017 well show how topdown pll design works in practice and provide examples of this method in use for commercial pll design. My first fpga design tutorial my first fpga design figure. Fractionalinteger n pll basics edited by curtis barrett wireless communication business unit abstract phase locked loop pll is a fundamental part of radio, wireless and telecommunication technology.

There will be a separate document for 2 look pll or 4 look last layer 4lll, which is going to be a subset of these algorithms. Pdf design of digital pll using optimized phase noise vco. Jun 07, 2016 i discuss a pll model whose reference input is a sinusoid rather than a phase in part 3. However, they design their pll circuit suitable for 10 mhz input signal. This tutorial explains how to configure and instantiate a phase. Designing and debugging a phaselocked loop pll circuit can be complicated, unless engineers have a deep understanding of pll theory and a logical development process.

A tutorial on hybrid pll design for synchronization in. Pll design procedure zdesign vco for frequency range of interest and obtain k vco. In part 2, well continue our look into pll theory and then provide some realworld pll design examples. Choosing the loop bandwidth equal to the frequency where pll noise and vco noise are equal.

Rfic design and testing for wireless communications a pragati ti india technical university course july 18, 21, 22, 2008 lecture 8. Simple and straightforward design guidelines to adjust the parameters of each pll are presented. The software has a userfriendly graphical interface, and a complete comprehensive tutorial for firsttime users. Agrawal fa foster dai 200 broun hall, auburn university auburn, al 368495201, usa 1. Perturbation based measurements appnote and database. Phase locked loop design fundamentals application note, rev. Fpga design with isplever tutorial introduction fpga design with isplever tutorial 4 figure 2. This pll is used in a frequency synthesizer and shows the response to an 80 khz step in the 10 mhz reference input. Our pll is to design for being used in some specific circuit design, such as carrierrecovery, data synchronization, demodulator, and so on. Pll design dean banerjee overview frequency planning number theory overview types of frequency plans loop filter design choosing loop parameters tricks and tips for optimization practical things that textbooks wont tell you real world component values suggestions for various pins pll debugging tips. Pll acts as a lowpass filter with respect to the reference modulation.