Sample-reset loop filter architecture for process independent and ripple-pole-less low jitter CMOS charge-pump PLLs

2002 ◽  
Author(s):  
A. Maxim ◽  
B. Scott ◽  
E. Schneider ◽  
M. Hagge ◽  
S. Chacko ◽  
...  
Keyword(s):  
Charge Pump ◽  
Loop Filter ◽  
Filter Architecture ◽  
Low Jitter

scholarly journals Reference Spur Reduction in Sampled-loop filter PLLs by Oversampling

2021 ◽  
Author(s):  
Chembiyan Thambidurai
Keyword(s):  
Charge Pump ◽  
Phase Locked Loops ◽  
Rigorous Analysis ◽  
Loop Filter ◽  
Reference Spur ◽  
Filter Architecture

<div><div><div><p>A technique to completely eliminate reference spurs in both Integer-N and Fractional-N charge pump phase locked loops (PLLs) based on an oversampled loop filter architecture is proposed. A rigorous analysis of the performance of the proposed technique in the presence of implementation non-idealities is also presented. It is shown through analysis and simulations that the proposed technique, in addition to completely eliminating reference spurs, adds an insignificant area and power overhead when applied to Integer-N PLLs and less than 6% increase in area and power in case of Fractional-N PLLs.</p></div></div></div>

scholarly journals Reference Spur Reduction in Sampled-loop filter PLLs by Oversampling

2021 ◽  
Author(s):  
Chembiyan Thambidurai
Keyword(s):  
Charge Pump ◽  
Phase Locked Loops ◽  
Rigorous Analysis ◽  
Loop Filter ◽  
Reference Spur ◽  
Filter Architecture

<div><div><div><p>A technique to completely eliminate reference spurs in both Integer-N and Fractional-N charge pump phase locked loops (PLLs) based on an oversampled loop filter architecture is proposed. A rigorous analysis of the performance of the proposed technique in the presence of implementation non-idealities is also presented. It is shown through analysis and simulations that the proposed technique, in addition to completely eliminating reference spurs, adds an insignificant area and power overhead when applied to Integer-N PLLs and less than 6% increase in area and power in case of Fractional-N PLLs.</p></div></div></div>

A low-jitter 125-1250-MHz process-independent and ripple-poleless 0.18-μm CMOS PLL based on a sample-reset loop filter

2001 ◽  
Vol 36 (11) ◽  
pp. 1673-1683 ◽  
Author(s):  
A. Maxim ◽  
B. Scott ◽  
E.M. Schneider ◽  
M.L. Hagge ◽  
S. Chacko ◽  
...  
Keyword(s):  
Loop Filter ◽  
Low Jitter

Analysis and Design of High Performance Phase Frequency Detector, Charge Pump and Loop Filter Circuits for Phase Locked Loop in Wireless Applications

2016 ◽  
Vol 4 (2) ◽  
pp. 397
Author(s):  
P.N. Metange ◽  
K. B. Khanchandani
Keyword(s):  
Leakage Current ◽  
High Performance ◽  
Charge Pump ◽  
Phase Locked Loop ◽  
Loop Filter ◽  
Phase Frequency Detector ◽  
Analysis And Design ◽  
Wireless Applications ◽  
5 Ghz ◽  
Frequency Detector

<p>This paper presents the analysis and design of high performance phase frequency detector, charge pump and loop filter circuits for phase locked loop in wireless applications. The proposed phase frequency detector (PFD) consumes only 8 µW and utilises small area. Also, at 1.8V voltage supply the maximum operation frequency of the conventional PFD is 500 MHz whereas proposed PFD is 5 GHz. Hence, highly suitable for low power, high speed and low jitter applications.  The differential charge pump uses switches using NMOS and the inverter delays for up and down signals do not generate any offset due to its fully symmetric operation. This configuration doubles the range of output voltage compliance compared to single ended charge pump. Differential stage is less sensitive to the leakage current since leakage current behaves as common mode offset with the dual output stages. All the circuits are implemented using cadence 0.18 μm CMOS Process.</p>

scholarly journals 10Ghz Charge Pump PLL for Low Jitter Applica-tions

2018 ◽  
Vol 7 (2.12) ◽  
pp. 348
Author(s):  
Rajeshwari D S ◽  
P V Rao ◽  
Ramesh Karmungi
Keyword(s):  
Charge Pump ◽  
Phase Locked Loop ◽  
Frequency Divider ◽  
Differential Delay ◽  
Turn On ◽  
Delay Cell ◽  
Start Up ◽  
Charge Pump Pll ◽  
Low Jitter ◽  
Symmetric Load

This paper presents design and simulation of charge pump architectures for 10GHz Charge Pump Phase locked Loop. Differential delay cell VCO with symmetric load and Programmable frequency divider are efficiently implemented in loop. Able to achieve Peak jitter of the Divider 10ns, Peak jitter of VCO 205ps at 1GHz.Charge pump is analysed in loop by reduced current mismatch using improved high swing cascode structure including start up circuitand it has low turn ON voltage and high ouput impedance to provide stable voltage.Charge pump results current mismatch less than 0.05%.10GHz DPLL is simulated with 65nm techonology, 1.2V and tsmc foundary model files

Low‐jitter spread spectrum clock generator using charge pump frequency detector in 0.18 μm CMOS for USB3.1 transceivers

2017 ◽  
Vol 12 (1) ◽  
pp. 99-107
Author(s):  
Shamin Sadrafshari ◽  
Razieh Eskandari ◽  
Khayrollah Hadidi ◽  
Abdollah Khoei
Keyword(s):  
Spread Spectrum ◽  
Charge Pump ◽  
Clock Generator ◽  
Pump Frequency ◽  
Low Jitter ◽  
Frequency Detector
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