Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

2011-05-17

2011-05-17

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S147000

Reexamination Certificate

active

07944256

ABSTRACT:
High precision of various feedback systems represented by a PLL circuit and the like is realized. For example, in a charge pump circuit in the PLL circuit, a first to a third PMOS transistors connected in series in three stages are provided between a power source voltage and an output node, and a first to a third NMOS transistors connected in series in three stages are provided between a ground voltage and the output node. And, the second PMOS transistor and the second NMOS transistor are driven ON when establishing conductivity between the power source voltage or the ground voltage and the output node by a first pulse signal, and the first PMOS transistor and the third NMOS transistor are driven OFF when the conductivity is shut down by a second pulse signal. Accordingly, the conduction time can be set by time difference between one edge of the first pulse signal and one edge of the second pulse signal, and therefore, short conduction time can be set, as a result, a charge amount of the charge pump circuit can be controlled precisely.

REFERENCES:
patent: 6147530 (2000-11-01), Nogawa
patent: 6247138 (2001-06-01), Tamura et al.
patent: 6414556 (2002-07-01), Mizuno
patent: 6768387 (2004-07-01), Masuda et al.
patent: 6792064 (2004-09-01), Nakamura
patent: 7061290 (2006-06-01), Hasegawa
patent: 7061330 (2006-06-01), Kegasa et al.
patent: 7279945 (2007-10-01), Hou et al.
patent: 7369000 (2008-05-01), Wu et al.
patent: 7372339 (2008-05-01), Fu
patent: 7439816 (2008-10-01), Lombaard
patent: 7656236 (2010-02-01), Williams
patent: 2001/0015677 (2001-08-01), Choi
patent: 2007/0120612 (2007-05-01), Fu
patent: 2007/0177703 (2007-08-01), Senba
patent: 2007/0229129 (2007-10-01), Nakagawa
patent: 60-111528 (1983-11-01), None
patent: 62-048809 (1985-08-01), None
patent: 62-125709 (1985-11-01), None
patent: 01-161912 (1987-12-01), None
patent: 03-101410 (1989-09-01), None
patent: 7-106959 (1993-10-01), None
patent: 9-266443 (1996-03-01), None
patent: 09-148894 (1996-08-01), None
patent: 10-200382 (1997-01-01), None
patent: 11-122099 (1997-10-01), None
patent: 11-261408 (1998-05-01), None
patent: 2001-257567 (2000-03-01), None
patent: 2005-252723 (2004-03-01), None
An Office Action from Japanese Patent Office dated Dec. 16, 2008 regarding Japanese Patent Application No. 2007-057890.

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