Differential amplifier and variable delay stage for use in a vol

Details Differential amplifier and variable delay stage for use in a vol Differential amplifier and variable delay stage for use in a vol

1995-03-13

1997-02-04

Pascal, Robert

Oscillators

Ring oscillators

327180, 327261, 327272, 330252, 330253, H03B 524

Patent

active

056002807

ABSTRACT:
A differential amplifier or delay cell for use in a voltage controlled oscillator comprises a pair of clipper transistors coupled across the output nodes of the amplifier for limiting the voltage swing of the output to a transistor threshold and improving the frequency response of the amplifier. A cross-coupled pair of transistors are included to provide a hysteresis response further improving the noise immunity of the amplifier. A variable control voltage is converted to a current and used to control the frequency of the output signal. An oscillator is formed from three stages, cascaded together, each stage comprising the improved differential amplifier and controlled by a differential reference signal.

REFERENCES:
patent: 4780687 (1988-10-01), Ducourant
patent: 4893036 (1990-01-01), Hester et al.
patent: 5206609 (1993-04-01), Mijuskovic
patent: 5227681 (1993-07-01), Koyama et al.
patent: 5347183 (1994-09-01), Phelan
Ansgar Pottbacker et al., "1993 Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Ian A. Young et al., "1993 Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Mark Horowitz et al., "1993 Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Nhat M. Nguyen et al., "1993 Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Thomas H. Lee et al., "1993 Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Mark Horowitz et al., "1993 Slide Supplement to the Digest of Technical Papers," 1993 IEEE International Solid-State Circuits Conference, vol. 36, Feb. 1993.
Alan B. Grebene, "Bipolar and MOS Analog Integrated Circuit Design" 541-543 and 627-678 John Wiley & Sons (1984).
"CMOS Integrated Circuits," RCA Solid State Databook 708-730 (1983).
Floyd Martin Gardner, "Phaselock Techniques" 94-107 John Wiley & Sons (1979).
Ian A. Young, Jeffrey K. Greason, and Keng L. Wong in "A PLL Clock Generator with 5 to 110 MHz of Lock Range for Microprocessors." IEEE Journal of Solid-State Circuits, pp. 1599-1607, vol. 27, No. 11, Nov. 1992.
Jacob Millman, Ph.D., "Microelectronics Digital and Analog Circuits and Systems" 630-631 McGraw-Hill (1979).
Paul R. Gray & Robert G. Meyer, "Analysis and Design of Analog Integrated Circuits" 604-632 John Wiley & Sons (1984).
Phillip E. Allen & Douglas Holberg, "CMOS Analog Circuit Design" 349-357 Saunders Hall Publishing (1987).

Affiliated with

Also associated with

Rating

Differential amplifier and variable delay stage for use in a vol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential amplifier and variable delay stage for use in a vol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential amplifier and variable delay stage for use in a vol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-682961