Amplifiers – With periodic switching input-output
Patent
1986-04-02
1987-12-01
Mullins, James B.
Amplifiers
With periodic switching input-output
330253, 330261, 307362, H03F 126, H03F 345
Patent
active
047107243
ABSTRACT:
A differential input circuit for a switched capacitor CMOS voltage comparator is provided which minimizes offset voltages by configuring the load devices to utilize a single switched capacitor biasing network initialized from internally-generated bias voltages, while configuring the initialization switches for the differential input devices to also utilize internally-generated bias voltages such that the offset voltages are stored on the input capacitors. The power supply rejection performance of the voltage comparator is also optimized by connecting parallel load devices of opposite switching topology such that the same input impedance is seen at both load terminals.
REFERENCES:
patent: 4255715 (1981-03-01), Cooperman
patent: 4262221 (1981-04-01), Dingwall
patent: 4320347 (1982-03-01), Haque
patent: 4375625 (1983-03-01), Lee
patent: 4423385 (1983-12-01), Evans
patent: 4431971 (1984-02-01), Haque
patent: 4442529 (1984-04-01), Ahuja et al.
patent: 4518869 (1985-05-01), Herold
patent: 4529965 (1985-07-01), Lee
patent: 4539495 (1985-09-01), Demler
patent: 4543534 (1985-09-01), Temes et al.
patent: 4543546 (1985-09-01), Hariharan
McCreary, J. L., "An NMOS Comparator for a Bubble Memory", IEEE Journal of Solid-State Circuits, vol. SC-16, No. 6, Dec. 1981.
Senderowicz, D., et al., "High-Performance NMOS Operational Amplifier", IEEE Journal of Solid-State Circuits, vol. SC-13, No. 6, Dec. 1978.
Motorola MC68HC11A8, Technical Summary Publication-printed Mar. 1985.
Motorola MC68HC11A8, Advance Information Publication-printed Apr. 1985.
Connell Lawrence E.
Webb Ronald J.
Boehm Douglas A.
Motorola Inc.
Mullins James B.
Southard Donald B.
Warren Charles L.
LandOfFree
Differential CMOS comparator for switched capacitor applications 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 CMOS comparator for switched capacitor applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential CMOS comparator for switched capacitor applications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1933580