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A high lock-in speed digital phase-locked loop
IEEE Transactions on Communications, 1991A digital phase-locked loop (DPLL) consisting of a modified 9-gate phase detector, a frequency multiplier, and a loop filter is described. All the components are implemented in digital hardware. The Z-transform is employed to deduce the system function, and some simple properties of the DPLL are inferred by examining the mathematical model.
Shi Hao, Yan Puqiang
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2018 IEEE Custom Integrated Circuits Conference (CICC), 2018
▪ Digital PLLs exploit CMOS scaling and allow accurate cancellation of fractional spurs and automatic bandwidth control ▪ In Bang-Bang DPLLs assisted by DTC, performance is only limited by DCO and DTC resolution ▪ Bang-Bang DPLLs assisted by DTC allow same phase-noise performance and fractionalspur level as standard DPLLs at much lower power ...
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▪ Digital PLLs exploit CMOS scaling and allow accurate cancellation of fractional spurs and automatic bandwidth control ▪ In Bang-Bang DPLLs assisted by DTC, performance is only limited by DCO and DTC resolution ▪ Bang-Bang DPLLs assisted by DTC allow same phase-noise performance and fractionalspur level as standard DPLLs at much lower power ...
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A digital loop filter for a Phase Locked Loop
2011 17th International Conference on Digital Signal Processing (DSP), 2011Modern digital telecommunication and audio systems include a Digital Phase Locked Loop (D-PLL) in a form of a device or an algorithm. Wireless infrastructure, broadband wire-line networks and high end audio systems require very high performance PLLs.
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Phase-domain all-digital phase-locked loop
IEEE Transactions on Circuits and Systems II: Express Briefs, 2005A fully digital frequency synthesizer for RF wireless applications has recently been proposed. At its foundation lies a digitally controlled oscillator that deliberately avoids any analog tuning controls. When implemented in a digital deep-submicrometer CMOS process, the proposed architecture appears more advantageous over conventional charge-pump ...
Robert Bogdan Staszewski +1 more
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A nonlinear phase detector for digital phase locked loops
2009 IEEE Custom Integrated Circuits Conference, 2009This paper examines several transfer curves of the phase detector in a digital phase-locked loop and illustrates the benefits of applying non-linearity to the phase transfer characteristics. Taking advantage of the programmability of the digital implementation, the proposed technique shows a better trade-off between the acquisition speed and the steady-
Ping-Hsuan Hsieh +2 more
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Advanced digital phase-locked loops
Proceedings of the IEEE 2013 Custom Integrated Circuits Conference, 2013Analog PLLs do not scale down as process and are not amenable to noise-cancellation and other calibration algorithms; Digital PLLs exploit CMOS scaling and allow for simple, accurate implementation of digiphase and two-point modulation; Typically, DPLLs require TDCs with tight resolution to achieve low phase noise and fractional-spur level, which ...
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Response of an All Digital Phase-Locked Loop
IEEE Transactions on Communications, 1974An all digital phase-locked loop (DPLL) is designed, analyzed, and tested. Three specific configurations are considered, generating first, second, and third order DPLL's; and it is found, using a computer simulation of a noise spike, and verified experimentally, that of these configurations the second-order system is optimum from the standpoint of ...
Joseph Garodnick +2 more
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IETE Journal of Education, 2011
AbstractThe paper describes the phase locked loop (PLL) in detail. Emphasis is on Digital Phase Locked loops (DPLL) and All-Digital Phase Locked Loops (ADPLL). Important parameters of the PLLs are described. Different sub-blocks of DPLL and ADPLL are described and discussed in detail. An example design of ADPLL is also discussed.
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AbstractThe paper describes the phase locked loop (PLL) in detail. Emphasis is on Digital Phase Locked loops (DPLL) and All-Digital Phase Locked Loops (ADPLL). Important parameters of the PLLs are described. Different sub-blocks of DPLL and ADPLL are described and discussed in detail. An example design of ADPLL is also discussed.
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2015
One of the most challenging tasks in analog circuit design is to adapt a functional block to ever-new CMOS process technologies. For digital circuits, the number of gates per square milimeter approximately doubles per chip generation. Integration of analog parts in recent deep submicron technologies is much more difficult and additionally complicated ...
Basab Bijoy Purkayastha +1 more
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One of the most challenging tasks in analog circuit design is to adapt a functional block to ever-new CMOS process technologies. For digital circuits, the number of gates per square milimeter approximately doubles per chip generation. Integration of analog parts in recent deep submicron technologies is much more difficult and additionally complicated ...
Basab Bijoy Purkayastha +1 more
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BIST for phase-locked loops in digital applications
International Test Conference 1999. Proceedings (IEEE Cat. No.99CH37034), 2003Phase-locked loops (PLLs) are an essential building block of most digital and mixed-signal ICs. This paper describes a built-in self-test (BIST) circuit that tests the key analog parameters of PLLs, using only logic gates that can be synthesized from a hardware description language (HDL). The parameters tested include lock range, lock time, RMS jitter,
Stephen K. Sunter, Aubin Roy
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