Flash type analog-to-digital converter having MOS comparators

Details Flash type analog-to-digital converter having MOS comparators Flash type analog-to-digital converter having MOS comparators

1992-05-04

1993-08-17

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341159, H03M 136

Patent

active

052373266

ABSTRACT:
A flash type ADC (analog-to-digital converter) for converting analog signals to N-bit digital signals comprises 2.sup.N -1 comparators having different threshold values in a sequential order which perform full parallel-connected comparison. Buffer-amplifiers buffer the outputs of the respective comparators and a priority encoder encodes the outputs of the comparators. According to the present invention, the conventional reference resistance row is eliminated, and instead, comparators are used, resulting in simplified circuitry, improved conversion speed, and facilitated VLSI formation.

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