Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2007-05-29
2007-05-29
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C327S094000, C327S156000
Reexamination Certificate
active
10841987
ABSTRACT:
A switched-capacitor ripple-smoothing filter includes a first pair of capacitors. The filter is configured such that either capacitor in the first pair may be reset and have a terminal coupled to a first input port and such that the remaining capacitor in the first pair is isolated from the first input port and has the terminal coupled to a first output port while the other capacitor is being charged. The filter further includes a second pair of capacitors, the filter being configured such that either capacitor in the second pair may be reset and have a terminal coupled to a second input port and such that the remaining capacitor in the second pair is isolated from the second input port and has the terminal coupled to a second output port while the other capacitor in the second pair is being charged. Advantageously, the filter is configured such that the capacitors in the first and second pair are reset responsive to the assertion of a single reset signal.
REFERENCES:
patent: 5329187 (1994-07-01), Crispie et al.
patent: 5598118 (1997-01-01), Kofman et al.
patent: 5973536 (1999-10-01), Maejima
patent: 6169427 (2001-01-01), Brandt
patent: 6313685 (2001-11-01), Rabii
patent: 6414541 (2002-07-01), Arvidsson et al.
patent: 6437608 (2002-08-01), Miyabe et al.
patent: 6611163 (2003-08-01), Mukherjee et al.
patent: 6791378 (2004-09-01), Rossi
patent: 6946986 (2005-09-01), Gabillard et al.
“A Low-Jitter 125-1250-MHz Process-Independent And Ripple-Poleless 0.18-um CMOS PLL Based On A Sample-Reset Loop Filter,” Adrian Maxim et al., IEEE Journal of Solid-State Circuits, vol. 36, No. 11, Nov. 2001.
Qu Ming
Zhu Xiang
Lattice Semiconductor Corporation
Le Dinh T.
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