Comparator circuit for analog-to-digital converter

Abstract

A comparator circuit used in an analog-to-digital converter includes an input voltage signal line; a reference voltage signal line; a plurality of comparators connected to said input voltage signal line and said reference voltage signal line; a plurality of amplifiers corresponding separately to each of said plurality of comparators and connected respectively between said input voltage signal lines, said reference voltage signal lines, and their corresponding comparators; and a thermocode channel connected to outputs of said plurality of comparators. A plurality of resistors with resistances in a constant ratio are provided in said reference voltage signal line and each is connected between the inputs of two adjacent amplifiers. A plurality of averaging resistors are provided and each is connected between the drains of the input transistor of two adjacent comparators; wherein said plurality of averaging resistors have the same resistance.

Dependencies are inferred from the claim text.