Patent ID: 6693575
Filing Date: 2004-02-17
Classification: H03M

Abstract:
An analog-to-digital converter circuit, comprising:a first signal generator for generating a first signal having a plurality of levels; a comparator, wherein a first part of said comparator is formed within each of a plurality of input channels that generate analog input signals and a remaining part of said comparator is formed external to said input channels and is shared by said input channels, wherein said comparator is controlled by a selection signal as to which analog input signal is to be compared with said first signal; a binary signal generator for generating a series of binary signals; and a one-bit latch having a first input coupled to receive an output of said comparator, said latch having a data input coupled to receive said binary signals, an output of said comparator controlling when said latch provides an output signal corresponding to a binary signal applied to said data input, wherein said latch is formed external to said input channels and is shared by said input channels; wherein said latch provides at least a portion of an N-bit digital code representing said analog input applied to said comparator.