Parallel type A/D converter

摘要

A parallel type A/D converter includes circuitry for generating plural reference voltages, comparators for comparing the plural reference voltages with an input voltage, logic circuits for logically processing the outputs of comparators, and an encoder circuit for encoding the outputs from the logic circuits. A pair of logic outputs are obtained by a first logic circuit chain for receiving as inputs the outputs of a comparator of number i and of a comparator i+2. Conversion errors are reduced by properly processing this pair of logic outputs in a second logic circuit, or by composing an encoder circuit for receiving the pair of logic outputs as inputs.