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Design And Verification of A PLL Based Clock And Data Recovery
Design And Verification of A PLL Based Clock And Data Recovery

... A. Phase/Frequency Detector (PFD) and Hogge Phase Detector The PFD for the coarse loop is designed in a conventional way using two D-type flip-flops, one NAND gate. Also, two multiplexers at the output have been added to ensure that the circuit generates either an “up” pulse or a “down” pulse and bo ...
Control Systems Elements of a control system
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Damped Second Order System

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WAN_0209 Wolfson Frequency Locked Loop

Homework Problem Set 8 Solutions How is an LRC circuit similar to
Homework Problem Set 8 Solutions How is an LRC circuit similar to

... inductance per unit length of a coaxial cable with an outer radius of 4.5 mm and an inner radius of 1.5 mm. Assume the space between the two conductors is filled with air.  Solving for capacitance per unit length: ...
1996 ISSCC 8.1 presentation slides for this paper
1996 ISSCC 8.1 presentation slides for this paper

... Growing demand for high-speed If0 on digital ICs creates an increasingly noisy environmentinwhichphase-locked loops (PLLs), delay-locked loops (DLLs), and other clock generating blocks must function. This noise, typically in the form of supply noise and substrate noise, makes designof low-jitter PLL ...
UMX-164-D16-G 数据资料DataSheet下载
UMX-164-D16-G 数据资料DataSheet下载

... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
angle modulation
angle modulation

... frequency is varied in response to an applied modulating voltage by using a voltage-variable capacitor • The main difficulty is that it is very difficult to maintain the stability of the carrier frequency of the VCO when used to generate wide-band FM. ...
VA3DIW, Vackar VFO, Vackar oscillator
VA3DIW, Vackar VFO, Vackar oscillator

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... The first five-phase induction motor drive system was proposed in the late 1970s for adjustable speed drive applications. Since then, a considerable research effort has been in place to develop commercially feasible multiphase drive Systems .Multiphase (more than three phase) systems are the focus o ...
Operational Amplifiers - Georgia Institute of Technology
Operational Amplifiers - Georgia Institute of Technology

... • Input resistor of inverting op-amp is replaced with a capacitor • Signal processing method which accentuates noise over time • Output signal is scaled derivative of input signal ...
Capacitor Self
Capacitor Self

... control "digital" voltage. VCO are very easy to build and are composed of a transistor (or highfrequency op-amp) with a variable capacitor (actually a varactor diode) in the feedback circuit. The digital voltage controls the bias on the diode and hence the oscillation frequency. The VCO output is ge ...
A Wide Locking Range Differential Colpitts Injection
A Wide Locking Range Differential Colpitts Injection

... • The ILFD is based on a VCO with two embedded injection MOSFETs for coupling external signal to the resonators. • The new VCO is composed of two single-ended VCOs coupled with cross-coupled MOSFETs and a transformer. • Supply voltage of 1.5 V, free-running frequency is tunable from 5.85 to 6.17 GHz ...
Paper E1 - Digital Circuits
Paper E1 - Digital Circuits

... A pn-junction diode detector is used to extract the modulated audio signal Basic property of diode – current flows essentially in one direction  –ve half-cycles blocked by the diode  +ve half-cycles pass unimpeded A capacitor is needed to smooth the resultant rectified waveform Headphones convert ...
AN9637: Simple Phase Meter Operates to 10MHz
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Exp-1 - WordPress.com
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... APPARATUS: Analog board, AB70. Oscilloscope and probes 2mm patch cords. THEORY: In this experiment we would like to introduce you a transistor oscillator circuit, called as RC Phase shift Oscillator. First of all we need to know what an oscillator is. An oscillator is an electronic circuit which act ...
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DE-70BM

... DESCRIPTION The Model DE series Deflector Drivers include a voltage controlled RF oscillator and a broadband RF power amplifier in a housing with power supply, RFI line filter, and line switch. An optional (M) analog amplitude modulation circuit is available. Standard frequency linearity is "0.25 pe ...
Bootstrapping a Phase Locked Loop for Better Performance
Bootstrapping a Phase Locked Loop for Better Performance

... the nominal state after a period of time. Since the bootstrapping voltage is applied to both oscillators, the PLLs are not disturbed. If either of the other two oscillators takes a frequency step, the AND gate does not toggle and the master remains in control. The net result is to smooth the master ...
Homework 1 - web page for staff
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... b) If Vo is not to be lower than -13V, find the maximum allowed value for RL ...
Theory of Operations - University of Portland
Theory of Operations - University of Portland

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Introduction to Phase
Introduction to Phase

... The operation of the system becomes clearer if we assume that the /N1 counter has just counted down to 0 and both counters have been loaded with their preset values N1 and N2, respectively. We now have to find the number of cycles the VCO must produce until the same logic state is reached again. Thi ...
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Phase-locked loop

A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input signal. While there are several differing types, it is easy to initially visualize as an electronic circuit consisting of a variable frequency oscillator and a phase detector. The oscillator generates a periodic signal. The phase detector compares the phase of that signal with the phase of the input periodic signal and adjusts the oscillator to keep the phases matched. Bringing the output signal back toward the input signal for comparison is called a feedback loop since the output is ""fed back"" toward the input forming a loop.Keeping the input and output phase in lock step also implies keeping the input and output frequencies the same. Consequently, in addition to synchronizing signals, a phase-locked loop can track an input frequency, or it can generate a frequency that is a multiple of the input frequency. These properties are used for computer clock synchronization, demodulation, and frequency synthesis.Phase-locked loops are widely employed in radio, telecommunications, computers and other electronic applications. They can be used to demodulate a signal, recover a signal from a noisy communication channel, generate a stable frequency at multiples of an input frequency (frequency synthesis), or distribute precisely timed clock pulses in digital logic circuits such as microprocessors. Since a single integrated circuit can provide a complete phase-locked-loop building block, the technique is widely used in modern electronic devices, with output frequencies from a fraction of a hertz up to many gigahertz.
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