An improved charge-averaging charge-pump scheme

An improved charge-averaging charge-pump scheme is described in the paper. The circuit mainly includes four pairs of switches and four sampling capacitors. Two operation modes (normal/charge-averaging) are achieved by switching on/off. SpectreVerilog simulation results show the proposed scheme can s...

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Veröffentlicht in:	Analog integrated circuits and signal processing 2007-04, Vol.51 (1), p.45-49
Hauptverfasser:	Huang, Shuilong, Wang, Zhihua
Format:	Artikel
Sprache:	eng
Schlagworte:	Charge pumps Circuits Frequency synthesizers Switches Synthesizers
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	An improved charge-averaging charge-pump scheme is described in the paper. The circuit mainly includes four pairs of switches and four sampling capacitors. Two operation modes (normal/charge-averaging) are achieved by switching on/off. SpectreVerilog simulation results show the proposed scheme can strongly reduce the energy of spurs, and could be applied to high performance frequency synthesizers.
ISSN:	0925-1030 1573-1979
DOI:	10.1007/s10470-007-9049-5