Gain-Boosting Charge Pump for Current Matching in Phase-Locked Loop

The charge pump (CP) circuit is a key element in a phase-locked loop (PLL). Its function is to transform the Up and Down signals from the phase/frequency detector into current. In CMOS CPs, which have Up and Down switches made of p-channel MOS and n-channel MOS, respectively, a current mismatch occu...

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Veröffentlicht in:	IEEE transactions on circuits and systems. 2, Analog and digital signal processing Analog and digital signal processing, 2006-10, Vol.53 (10), p.1022-1025
Hauptverfasser:	Choi, Y.-S., Han, D.-H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Charge pumps Circuits CMOS Dumping Electric potential Filters Gain-boosting charge pump (CP) Matching Metal oxide semiconductors Phase detection Phase frequency detector Phase locked loops Phase noise phase-locked loop (PLL) Signal generators Switches Voltage Voltage fluctuations voltage-controlled resistor
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