Method and apparatus for combining a flash analog to digital con

Details Method and apparatus for combining a flash analog to digital con Method and apparatus for combining a flash analog to digital con

1993-08-31

1994-09-06

Logan, Sharon D.

Coded data generation or conversion

Reversible analog to digital converters

341159, H03M 102, H03M 136

Patent

active

053452348

ABSTRACT:
A converter circuit provides analog to digital and digital to analog functions on a single silicon device. A flash analog to digital converter produces digital outputs using comparators which each receive an input signal and which each have different reference voltages. A decoder receiving digital inputs activates switches to connect selected ones of the same voltage references used by the flash analog to digital converter to a buffer which produces an analog output. The converter circuit can be a single or multi-stage flash analog to digital converter operating in a single channel or multi-channel environment. Timing and control logic prevents switching from occurring at times when perturbations on the voltage references could affect the analog and digital outputs.

REFERENCES:
patent: 4160243 (1979-07-01), Moriya et al.
patent: 4745393 (1988-05-01), Tsukada et al.
patent: 4752766 (1988-06-01), Shimizu et al.

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