Phase locked loop circuit and integrated circuit for the same

Details Phase locked loop circuit and integrated circuit for the same Phase locked loop circuit and integrated circuit for the same

2011-06-21

2011-06-21

Pascal, Robert (Department: 2817)

Oscillators

With frequency calibration or testing

C331S016000, C331S017000, C327S157000

Reexamination Certificate

active

07965144

ABSTRACT:
The present invention provides a phase locked loop circuit including: a voltage controlled oscillator; a variable frequency-dividing circuit; a phase comparing circuit for comparing a phase of the frequency-dividing signal a charge pump circuit; a loop filter; a voltage supplying circuit; a frequency measuring circuit; and a voltage measuring circuit.

REFERENCES:
patent: 7193479 (2007-03-01), Fujita
patent: 7352249 (2008-04-01), Balboni et al.
patent: 2009/0072911 (2009-03-01), Ke et al.
patent: 10-154934 (1998-06-01), None
patent: 2842847 (1998-10-01), None
patent: 11-308101 (1999-11-01), None
patent: 2001-156629 (2001-06-01), None
patent: 2005-311945 (2005-11-01), None
patent: 2007-507985 (2007-03-01), None
patent: 2008-028765 (2008-02-01), None
patent: 2008-072166 (2008-03-01), None
Japanese Office Action issued Apr. 27, 2010 for corresponding Japanese Application No. 2008-089371.
Maxim, Adrian, et al, “A Fully Integrated 0.13-μm CMOS Digital Low-IF DBS Satellite Tuner Using a Ring Oscillator-Based Frequency Synthesizer” IEEE Journal of Solid-State Circuits, vol. 42, No. 5. May 2007, pp. 967-982.

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