Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2006-07-04
2006-07-04
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S261000
Reexamination Certificate
active
07071778
ABSTRACT:
A high-speed low-power dynamic current biased operational amplifier (Op-amp) for use in switched capacitor circuits. The system and method reduces current in the reset process of the switched capacitor circuit's operation, while maintaining the drive current required for fast settling in the amplification process. The system and method significantly lowers the power consumption of the switched capacitor circuit, while overcoming the main issues related to dynamic current biasing in an Op-amp, common-mode feedback interaction, using architecture other than the standard differential input stage of a normal Op-amp.
REFERENCES:
patent: 4284957 (1981-08-01), Hague
patent: 4335355 (1982-06-01), Hague
patent: 5084683 (1992-01-01), Nicollini
patent: 5598129 (1997-01-01), Chambers
patent: 5990741 (1999-11-01), Yamamoto et al.
patent: 6377120 (2002-04-01), Hsieh
patent: 6462695 (2002-10-01), Ahuja et al.
patent: 6504432 (2003-01-01), Rokhsaz
patent: 6522200 (2003-02-01), Siniscalchi
patent: 6552676 (2003-04-01), Bjorksten et al.
patent: 6624698 (2003-09-01), Nagaraj
patent: 6724258 (2004-04-01), Fayed
patent: 6753732 (2004-06-01), Moreland
patent: 2002/0036519 (2002-03-01), Krishnapura et al.
patent: 0 375 017 (1990-06-01), None
patent: 2219314 (1990-08-01), None
US 6,529,069, 03/2003, Krishnapura et al. (withdrawn)
IEEE Transactions on Circuits and Systems, vol. 40, No. 4, Apr. 1993, p. 258-262, “Highly Linear Voltage-Controlled CMOS Transconductors”, Stainslaw Szczepanski, Adam Wyszynski, Rolf Schaumann.
Peter Peregrinus Ltd, 1998, Chapter 5.3, p. 193, “Analogue IC Design: the current -mode approach”, C. Toumazou, F.J.Lidgey, D.G. Haigh.
IEEE Journal of Solid State Circuits, vol. 24, No. 3, Jun. 1989, p. 803, “High-Frequency Fully Differential Filter Using Operational Amplifiers Without Common-Mode Feedback”, Germano Nicollini, Francesco Moretti, Mauro Conti.
IEEE Journal of Solid State Circuits,vol. 34, No. 7, Jul. 1999, p. 921 “A 16mW, 120dB Linear Switched Capacitor Delta-Sigma Modulator with Dynamic Biasing”, Dan Kasha, Wai Lee, Axel Thomsen.
ISPLED 1998, Aug. 10-12, 1998, Monterey, CA USA, p. 203. “On the Optimum Design of Regulated Cascode Operational Transconductance Amplifiers”, Thomas Burger, Quiting Huang.
IEEE Journal of Solid State Circuits, vol. 25, No. 6, Dec. 1990, p. 1379, “A Fast Settling CMOS Op Amp for SC Circuits with 90dB DC Gain”, Klass Bult, Govert Geelen.
IEEE Journal of Solid State Circuits, vol. 33, No. 12, Dec. 1998, p. 2010, “A High-Swing CMOS Telescopic Operational Amplifier”, Kush Gulati, Hai-Seung Lee.
IEEE Journal of Solid State Circuits, vol. 17, No. 3, Jun. 1982, p. 522, “Adaptive Biasing CMOS Amplifiers”, Marc Degrauwe, Jozef Rijmenants, Eric Vittoz, Hugo De Man.
IEEE Journal of Solid State Circuits, vol. 20, No. 6, Dec. 1985, p. 1122, “A High-Performance Micropower Switched Capacitor Filter”, Rinaldo Castello, Paul Gray.
IEEE Journal of Solid State Circuits, vol. 24, No. 3, Jun. 1989, p. 744, “A Very-High-Slew-Rate CMOS Operational Amplifier”, R. Klinke, B Hosticks, H Pfleiderer.
IEEE Journal of Solid State Circuits, vol. 34, No. 2, Feb. 1999, p. 134, “An Integrated Low-Voltage Class AB CMOS OTA”, Ramesh Harjani, Randy Heineke, Feng Wang.
IEEE Journal of Solid State Circuits, vol. 15, Oct. 1980, p. 887, Dynamic CMOS Amplifiers, Bedrich Hosticka.
IEEE Journal of Solid State Circuits, vol. 17, No. 3, Jun. 1982, p. 499, “Real-Time Programmable Low Power SC Bandpass Filter”, B Hosticka, D Herbst, B Hoeflinger, U Kleine, J Pandel, R Schweer.
Choe Henry
Haverstock & Owens LLP
Sony Corporation
Sony Electronics Inc.
LandOfFree
High-speed low-power dynamic current biased operational... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-speed low-power dynamic current biased operational..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-speed low-power dynamic current biased operational... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3569910