Ripsaw analog-to-digital converter and method

Details Ripsaw analog-to-digital converter and method Ripsaw analog-to-digital converter and method

1993-02-18

1994-06-14

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341166, 341141, H03M 156

Patent

active

053214048

ABSTRACT:
An analog-to-digital converter (ADC) generates multiple analog waveforms, preferably as voltage ramps, that progressively increase in signal value over time but at different rates of increase. The ramp with the greatest slope is initially compared with an input signal sample until the ramp exceeds the sample, at which time the system switches to the ramp with the next greatest slope for comparison with the input. The operation then repeats, with the system switching to the next lower ramp each time the current ramp exceeds the input. Both the number of ramp switching events that occur during a sample cycle, and the clock count at the time of the most recent ramp switch, are recorded and used respectively as the most and least significant bits of a digital output. The switching event count proceeds from an initial maximum value from which it subtracts at each switching event, while the clock count builds up from an initial minimum value.

REFERENCES:
patent: 3943466 (1976-03-01), Lyghounis
patent: 3961325 (1976-06-01), Kendall et al.
patent: 4064515 (1977-12-01), Mashimo et al.
patent: 4088993 (1978-05-01), LeCardonnel et al.
patent: 4940982 (1990-07-01), Gulczynski
Fink and Christianse, ed, Electronics Engineer's Handbook, McGraw-Hill, 1989, pp. 3.42-4.43, 8.69-8.77, 16.63-16.67.
Talambiras, "Some Considerations in the Design of Wide-Dynamic Range Audio Digitizing Systems", Proc. Audio Engineering Society 57th Cov., May 10, 1977 pp. 164-170.
1988 Analog Devices Data Book, pp. 3.13-3.22.

Affiliated with

Also associated with

Rating

Ripsaw analog-to-digital converter and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ripsaw analog-to-digital converter and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ripsaw analog-to-digital converter and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1252324