DAC achieving monotonicity with equal sources and shift array th

Details DAC achieving monotonicity with equal sources and shift array th DAC achieving monotonicity with equal sources and shift array th

1993-07-29

1996-07-23

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341144, H03M 166

Patent

active

055394051

ABSTRACT:
Disclosed is a system and method for providing full monotonicity among desired sequential output values by converting a stream of sequential input signals each of which are representative of their corresponding desired output values. The disclosed invention comprises a system and method for individually translating each received signal to a unary value, the unary value being representative of a desired output value, and a system and method for selectively enabling a plurality of energy sources as a function of this unary value such that the total of any enabled energy source at any one time is proportional to this unary value. The conversion circuit uses a shifting array for controlling the energy sources.

REFERENCES:
patent: 4847621 (1989-07-01), Colles
patent: 4857929 (1989-08-01), Katzenstein
patent: 4899151 (1990-02-01), Colles
patent: 4904922 (1990-02-01), Colles
"Session XIV: Data Acquisition and Conversion, THPM 14.6: A 60 ns Glitch-Free NMOS DAC," V. Shen, D. Hodges, 1983 IEEE International Solid-State Circuits Conference, pp. 188-189.
"An 80-MHz 8-bit CMOS D/A Converter," T. Miki, Y. Nakamura, M. Nakaya, S. Asai, Y. Akasaka, Y. Hoiba, IEEE Journal of Solid-State Circuits, vol. SC-21, No. 6, Dec. 1986, pp. 983-988.
CL-PX2070 Preliminary Data Sheet, Digital Video Processor, Oct. 1992.
CL-PX2080 Preliminary Data Sheet, MediaDAC, Dec. 1992.

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