A novel high swing, low power charge pump circuit with excellent current matching

Author(s):  
Noushin Ghaderi ◽  
Ali Dehghani
Author(s):  
Sung Sik Park ◽  
Ju Sang Lee ◽  
Sang Dae Yu

In this paper a new technique is presented to improve the jitter performance of conventional phase frequency detectors by completely removing the unnecessary one-shot pulse. This technique uses a variable pulse-height circuit to control the unnecessary one-shot pulse height. In addition, a novel charge-pump circuit with perfect current-matching characteristics is used to improve the output jitter performance of conventional charge pumps. This circuit is composed of a pair of symmetrical pump circuits to obtain a good current matching. As a result, the proposed charge-pump circuit has perfect current-matching characteristics, wide output range, no glitch output current, and no jump output voltage. In order to verify such operation, circuit simulation is performed using 0.18 μm CMOS process parameters.


2010 ◽  
Vol 31 (1) ◽  
pp. 015009 ◽  
Author(s):  
Feng Peng ◽  
Li Yunlong ◽  
Wu Nanjian

2005 ◽  
Vol 14 (05) ◽  
pp. 997-1006 ◽  
Author(s):  
ROBERT C. CHANG ◽  
LUNG-CHIH KUO ◽  
HOU-MING CHEN

A low-voltage low-power CMOS phase-locked loop (PLL) is presented in this paper. It consists of a phase frequency detector, a charge pump, a loop filter, a voltage-control oscillator, and a frequency divider. A new phase frequency detector is proposed to reduce the dead zone and the mismatch effect of the charge pump circuit. A novel charge pump circuit with a small area and wide output range is described. The PLL circuit has been designed using the TSMC 0.35 μm 1P4M CMOS technology. The chip area is 1.08 mm × 1.01 mm. The post-layout simulation results show that the frequency of 900 MHz can be generated with a single supply voltage of 1.5 V. The power dissipation of the circuit is 9.17 mW.


2020 ◽  
Vol 164 ◽  
pp. 107683 ◽  
Author(s):  
Hui Peng ◽  
Herbert De Pauw ◽  
Pieter Bauwens ◽  
Jan Doutreloigne

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