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Book Monolithic Phase Locked Loops and Clock Recovery Circuits

Download or read book Monolithic Phase Locked Loops and Clock Recovery Circuits written by Behzad Razavi and published by John Wiley & Sons. This book was released on 1996-04-18 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring an extensive 40 page tutorial introduction, this carefully compiled anthology of 65 of the most important papers on phase-locked loops and clock recovery circuits brings you comprehensive coverage of the field-all in one self-contained volume. You'll gain an understanding of the analysis, design, simulation, and implementation of phase-locked loops and clock recovery circuits in CMOS and bipolar technologies along with valuable insights into the issues and trade-offs associated with phase locked systems for high speed, low power, and low noise.

Book Design and Implementation of a Delay Locked Loop Based 20 Gb s Clock and Data Recovery Circuit in 0 18 Micron CMOS

Download or read book Design and Implementation of a Delay Locked Loop Based 20 Gb s Clock and Data Recovery Circuit in 0 18 Micron CMOS written by Ravindran Mohanavelu and published by . This book was released on 2004 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Design and Modeling of Clock and Data Recovery Integrated Circuit in 130 Nm CMOS Technology for 10 Gb

Download or read book Design and Modeling of Clock and Data Recovery Integrated Circuit in 130 Nm CMOS Technology for 10 Gb written by Maher Assaad and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract This thesis describes the design and implementation of a fully monolithic 10 Gb/s phase and frequency-locked loop based clock and data recovery (PFLL-CDR) integrated circuit, as well as the Verilog-A modeling of an asynchronous serial link based chip to chip communication system incorporating the proposed concept. The proposed design was implemented and fabricated using the 130 nm CMOS technology offered by UMC (United Microelectronics Corporation). Different PLL-based CDR circuits topologies were investigated in terms of architecture and speed. Based on the investigation, we proposed a new concept of quarter-rate (i.e. the clocking speed in the circuit is 2.5 GHz for 10 Gb/s data rate) and dual-loop topology which consists of phase-locked and frequency-locked loop. The frequency-locked loop (FLL) operates independently from the phase-locked loop (PLL), and has a highly-desired feature that once the proper frequency has been acquired, the FLL is automatically disabled and the PLL will take over to adjust the clock edges approximately in the middle of the incoming data bits for proper sampling. Another important feature of the proposed quarter-rate concept is the inherent 1-to-4 demultiplexing of the input serial data stream. A new quarter-rate phase detector based on the non-linear early-late phase detector concept has been used to achieve the multi-Giga bit/s speed and to eliminate the need of the front-end data pre-processing (edge detecting) units usually associated with the conventional CDR circuits. An eight-stage differential ring oscillator running at 2.5 GHz frequency center was used for the voltage-controlled oscillator (VCO) to generate low-jitter multi-phase clock signals. The transistor level simulation results demonstrated excellent performances in term of locking speed and power consumption. In order to verify the accuracy of the proposed quarter-rate concept, a clockless asynchronous serial link incorporating the proposed concept and communicating two chips at 10 Gb/s has been modelled at gate level using the Verilog-A language and time-domain simulated.

Book A High Speed Data Recovery Circuit with Lead lag Phase Detection

Download or read book A High Speed Data Recovery Circuit with Lead lag Phase Detection written by Mezyad M. Amourah and published by . This book was released on 2000 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Phase/Frequency Detector (PFD) that has a simple structure and a fast response is presented. This PFD has three signal inputs and no dead zone. The absence of the dead zone reduces an important component of the jitter. An implementation of this PFD in a clock recovery circuit is also presented. A data recovery architecture that uses this fast clock recovery circuit is described. A clock recovery circuit that operates at 1GHz in a 0.6u CMOS N-Well process is discussed.

Book Phase Locked Loop PLL Based Clock and Data Recovery Circuits CDR Using Calibrated Delay Flip Flop DFF

Download or read book Phase Locked Loop PLL Based Clock and Data Recovery Circuits CDR Using Calibrated Delay Flip Flop DFF written by Sagar Waghela and published by . This book was released on 2014 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Delay Flip Flop (DFF) is used in the phase detector circuit of the clock and data recovery circuit. A DFF consists of the three important timing parameters: setup time, hold time, and clock-to-output delay. These timing parameters play a vital role in designing a system at the transistor level. This thesis paper explains the impact of metastablity on the clock and data recovery (CDR) system and the importance of calibrating the DFF using a metastable circuit to improve a system's lock time and peak-to-peak jitter performance. The DFF was modeled in MATLAB Simulink software and calibrated by adjusting timing parameters. The CDR system was simulated in Simulink for three different cases: 1) equal setup and hold times, 2) setup time greater than the hold time, and 3) hold time greater than the setup time. The Simulink results were then compared with the Cadence simulation results, and it was observed that the calibration of DFF using a metastable circuit improved the CDR system's lock time and jitter tolerance performance. The overall power dissipation of the designed CDR system was 2.4 mW from a 1 volt supply voltage.

Book Design and Modeling of a Clock Data Recovery CDR Circuit

Download or read book Design and Modeling of a Clock Data Recovery CDR Circuit written by Zainab binti Mohamad Ashari and published by . This book was released on 2013 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clock data recovery (CDR) circuits are in high demand due to development in communication technology such as improvements in transmit/receive processing and GHz transfer bandwidths via wired and wireless media. Large bandwidth data with high transfer rates encounter several major problems at the reception. Electrical signals are easily distorted with large bandwidth data when transmitted at high speeds. Existence of noise will cause disturbance or undesired signals at the output of the system. Minimizing the effects of jitter in CDR system is important to protect the signal from disturbance and to maintain low phase noise. A 5 Gbps clock data recovery circuit using PLL approach is proposed in this work. Hardware Description language, Verilog-AMS has been implemented as a modeling language for CDR using SMASH Dolphin Integrated software. The architecture of the proposed PLL CDR circuits incorporates a phase detector, RLC low-pass filter, voltage-controlled oscillator, and divider. Evaluation of the CDR performance is based on the design, frequency, transfer rate, supply voltage, and phase noise. The proposed circuit has a simple configuration powered using low supply of 1.0 V and operates in high speed of 5 Gbps. The phase noise performance is measure using four different offsets. Less phase noise of -130.29 dBc/Hz is generated without jitter added on it. To simulate jitter from 1 MHz to 100 GHz a pulse is added in each block of the CDR circuit and the circuit's performance is evaluated. CDR with jitter from 10 GHz up to 100 GHz at VCO produces the highest phase noise at the output port of -125.10 dBc/Hz. The PLL-based CDR circuit is affected when jitter pulses is added at the VCO. The proposed PLL-based CDR circuit is suitable for PCIe application with 5 Gbps transfer rate, low supply voltage, and has low phase noise.

Book Low jitter Clock and Data Recovery Circuit with Wide linear range Frequency Detector

Download or read book Low jitter Clock and Data Recovery Circuit with Wide linear range Frequency Detector written by 李明華 and published by . This book was released on 2007 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analysis and Design of Robust Multi Gb s Clock and Data Recovery Circuits

Download or read book Analysis and Design of Robust Multi Gb s Clock and Data Recovery Circuits written by David James Rennie and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Performance Analysis for Clock and Data Recovery Circuits Under Process Variation

Download or read book Performance Analysis for Clock and Data Recovery Circuits Under Process Variation written by and published by . This book was released on 2007 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clock and data recovery circuits play a very important role in modern data communication systems. It has very wide application in many areas, such as optical communications and interconnection between chips [1]. Today in IC industry, the shrinkage of feature size increasingly enlarges the uncertainty of circuit performance caused by process variation. As the data transmission speed dramatically increases, this uncertainty will heavily affect the clock and data recovery circuit performance and reliability in communication systems. Thus, research on performance variation of a clock and data recovery circuit caused by process variation is meaningful. The conclusion will have significant influence on chip testing. In this research, a clock and data recovery circuit is laid out by TSMC 180nm technology. The performance variation caused by process variation is investigated by HSPICE simulation, and compared with the theoretical analysis results derived through the mathematical model of the clock and data recovery circuit. The results demonstrate that our theoretical model matches well with the real simulations. Both theoretical and simulation results also indicate that process variations in the low pass filter have significant impact on performance parameters such as damping ratio, natural frequency, and lock time of the clock and data recovery circuit. Reference 1. B. Razavi, Challenges in the design high-speed clock and data recovery circuits, IEEE Communications Magazine, vol. 40, no. 8, pp. 94- 101, Aug. 2002.

Book Delay Flip flop DFF Metastability Impact on Clock and Data Recovery CDR and Phase locked Loop PLL Circuits

Download or read book Delay Flip flop DFF Metastability Impact on Clock and Data Recovery CDR and Phase locked Loop PLL Circuits written by Alfred Sargezisardrud and published by . This book was released on 2014 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling delay flip-flops for binary (e.g., Alexander) phase detectors requires paying close attention to three important timing parameters: setup time, hold time, and clock edge-to-output (or briefly C2Q time). These parameters have a critical role in determining the status of the system on the circuit level. This study provided a guideline for designing an optimum DFF for an Alexander phase detector in a clock and data recovery circuit. Furthermore, it indicated DFF timing requirements for a high-speed phase detector in a clock and data recovery circuit. The CDR was also modeled by Verilog-A, and the results were compared with Simulink model achievements. Eventually designed in 45 nm CMOS technology, for 10 Gbps random sequence, the recovered clock contained 0.136 UI and 0.15 UI peak-to-peak jitter on the falling and rising edges respectively, and the lock time was 125 ns. The overall power dissipation was 21 mW from a 1 V supply voltage. Future work includes layout design and manufacturing of the proposed design.

Book Phase Locked Loops and Clock Data Recovery Circuit Design on Nano CMOS Processes

Download or read book Phase Locked Loops and Clock Data Recovery Circuit Design on Nano CMOS Processes written by Greg W. Starr and published by Wiley. This book was released on 2017-07-24 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book delivers practical techniques that impact the cost, quality and timing of the design for the working engineer. Starr provides the framework for understanding phase-locked loop design and then applies this technology to the design of the clock data recovery circuits. Important aspects of design are included to provide engineers with the necessary information they need to insure their designs are successful.

Book Design of Clock Data Recovery Integrated Circuit for High Speed Data Communication Systems

Download or read book Design of Clock Data Recovery Integrated Circuit for High Speed Data Communication Systems written by Jinghua Li and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand for low cost Serializer and De-serializer (SerDes) integrated circuits has increased due to the widespread use of Synchronous Optical Network (SONET)/Gigabit Ethernet network and chip-to-chip interfaces such as PCI-Express (PCIe), Serial ATA(SATA) and Fibre channel standard applications. Among all these applications, clock data recovery (CDR) is one of the key design components. With the increasing demand for higher bandwidth and high integration. Complementary metal-oxidesemiconductor (CMOS) implementation is now a design trend for the predominant products in this research work, a fully integrated 10Gb/s (OC-192) CDR architecture in standard 0.18 um CMOS is developed. The proposed architecture integrates the typically large off-chip filter capacitor by using two feed-forward paths configuration to generate the required zero and poles and satisfies SONET jitter requirements with a total power dissipation (including the buffers) of 290mW. The chip exceeds SONET OC-192 jitter tolerance mask, and high frequency jitter tolerance is over 0.31 UIpp by applying PRBS data with a pattern length of 231-1. The implementation is the first fully integrated 10Gb/s CDR IC which meets/exceeds the SONET standard in the literature. The second proposed CDR architecture includes an adaptive bang-bang control algorithm. For 6MHz sinusoidal jitter modulation, the new architecture reduces the tracking error to 11.4ps peak-to-peak, versus that of 19.7ps of the conventional bangbang CDR. The main contribution of the proposed architecture is that it optimizes the loop dynamics by adjusting the bang-bang bandwidth adaptively to minimize the steady state jitter of the CDR, which leads to an improved jitter tolerance performance. According to simulation, the jitter performance is improved by more than 0.04UI, which alleviates the stringent 0.1UI peak to peak jitter requirements in the PCIe/Fibre channel/Sonet Standard.

Book Low Power Clock and Data Recovery Integrated Circuits

Download or read book Low Power Clock and Data Recovery Integrated Circuits written by Shahab Ardalan and published by . This book was released on 2007 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in technology and the introduction of high speed processors have increased the demand for fast, compact and commercial methods for transferring large amounts of data. The next generation of the communication access network will use optical fiber as a media for data transmission to the subscriber. In optical data or chip-to-chip data communication, the continuous received data needs to be converted to discrete data. For the conversion, a synchronous clock and data are required. A clock and data recovery (CDR) circuit recovers the phase information from the data and generates the in-phase clock and data. In this dissertation, two clock and data recovery circuits for Giga-bits per second (Gbps) serial data communication are designed and fabricated in 180nm and 90nm CMOS technology. The primary objective was to reduce the circuit power dissipation for multi-channel data communication applications. The power saving is achieved using low swing voltage signaling scheme. Furthermore, a novel low input swing Alexander phase detector is introduced. The proposed phase detector reduces the power consumption at the transmitter and receiver blocks. The circuit demonstrates a low power dissipation of 340[mu]W/Gbps in 90nm CMOS technology. The CDR is able to recover the input signal swing of 35mVp. The peak-to-peak jitter is 21ps and RMS jitter is 2.5ps. Total core area excluding pads is approximately 0.01mm2.

Book High Speed Clock and Data Recovery Analysis

Download or read book High Speed Clock and Data Recovery Analysis written by Abishek Namachivayam and published by . This book was released on 2020 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Baud rate clock and data recovery circuits are critical to high speed serial links since these require only one sample per data period thereby requiring low speed samplers and comparators. This work models and discusses the backend of one particular Baud rate CDR – Mueller Muller, and analyses some of the building blocks of the CDR – Phase Detector, Phase Interpolator and the Quadrature Phase Generator. Firstly, a PAM-4 Quadrature Phase Detector operating at 80Gb/s is discussed. The challenges associated with designing a Mueller-Muller PD for an asymmetric channel are discussed and one way to resolve this issue is proposed. Then the underlying digital blocks that make up the Phase detector are expanded upon. Secondly, a 64-step digitally controlled Phase Interpolator running at 16GHz clock rate is analyzed and its design challenges with regards to achieving linearity and ensuring duty cycle fidelity are explored. Finally, a Quadrature Phase Generator with digital delay control is analyzed. It is modeled at 16GHz clock rate and the range/resolution problem and its impact on clock jitter is explored.