Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1995-05-26
1996-07-30
Young, Brian K.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341155, H03M 138
Patent
active
055416020
ABSTRACT:
An analog to digital converter stage that has a very short sampling phase settling time requirement is used in a multistage pipelined analog to digital converter with a novel clocking design. Each clock period has a sampling phase and a hold phase. According to a first aspect, the sampling phase of each clock cycle is much shorter than the hold phase. This takes advantage of the reduced sampling phase settling time requirement of the analog to digital converter stage according to the present invention, and also allows a relatively longer hold phase during each clock cycle. The analog to digital converter stage according to the present invention is implemented with an operational amplifier such that during the sampling phase, the operational amplifier does not have to settle in order for correct sampling to occur, whereas operational amplifier settling is required during the hold phase. According to a second aspect, several clocks are cyclicly recirculated among the stages of a pipelined analog to digital converter.
REFERENCES:
patent: 5027116 (1991-06-01), Armstrong et al.
patent: 5043732 (1991-08-01), Robertson et al.
B. Yeshwant Kamath, Robert G. Meyer, Paul R. Gray, Relationship Between Frequency Response and Settling Time of Operational Amplifiers, IEEE Journal of Solid-State Circuits, vol. SC-9.
Deog-Kyoon Jeong, Gaetano Borriello, David A. Hodges,, Design of PLL-Based Clock Generation Circuits, IEEE Journal of Solid-State Circuits, vol. SC-22, Apr. 1987, pp. 255-261.
Lewicki Laurence D.
Opris Ion E.
National Semiconductor Corporation
Smith Slade E.
Young Brian K.
LandOfFree
Multi-phased pipeland analog to digital converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-phased pipeland analog to digital converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-phased pipeland analog to digital converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1662692