Oscillators – Ring oscillators
Reexamination Certificate
2007-09-04
2007-09-04
Pascal, Robert (Department: 2817)
Oscillators
Ring oscillators
C331S049000, C324S762010, C324S658000
Reexamination Certificate
active
11197918
ABSTRACT:
An integrated circuit device is provided having a reference ring oscillator circuit having a plurality of stages. Each stage has a logic gate and electrically connecting to a first independent voltage source. The integrated circuit device also has at least one additional ring oscillator circuit having a plurality of stages. Each stage has a logic gate substantially identical to the logic gates of the reference ring oscillator circuit and electrically connecting to a respective at least one second independent voltage source. Each stage also has a FET load driven by the logic gate and electrically connecting to a third independent voltage source. A measured difference in capacitance between the reference ring oscillator circuit per stage and the at least one additional ring oscillator circuit per stage comprises a gate capacitance of a FET load.
REFERENCES:
patent: 6166607 (2000-12-01), Schoellkopf
patent: 7193427 (2007-03-01), Persun et al.
patent: 2003/0146771 (2003-08-01), Moore
patent: 2004/0100333 (2004-05-01), Mizuno et al.
patent: 2004/0100336 (2004-05-01), Christensen et al.
patent: 2005/0134394 (2005-06-01), Liu
Y. Taur et al., “Fundamentals of Modern VLSI Devices,” Cambridge University Press, pp. 68-78, 1998.
N.H.E. Weste et al., “Principles of CMOS VLSI Design,” A System Perspective, Second Edition, Chapter 4, Addison-Wesley Publishing Company, pp. 180-188, 1993.
R.J. Baker et al., “CMOS Circuit Design, Layout, and Simulation,” IEEE Press Series on Microelectronic Systems, pp. 84-87, 1998.
Bhushan Manjul
Ketchen Mark B.
Johnson Ryan J
Pascal Robert
Ryan & Mason & Lewis, LLP
LandOfFree
Methods and apparatus for ring oscillator based MOSFET gate... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for ring oscillator based MOSFET gate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for ring oscillator based MOSFET gate... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3723324