Patent ID: 6329942
Filing Date: 2001-12-11
Classification: H03M

Abstract:
An A/D converter for sampling an input signal, comprising:a first reference circuit for generating a first reference signal;a second reference circuit for generating a second reference signal;a first comparing circuit for comparing said input signal with said first reference signal to produce a first digital signal in response to said difference between said input signal and said first reference signal;a second comparing circuit for comparing said input signal with said second reference signal to produce a second digital signal in response to said difference between said input signal and said second reference signal;a first latch to latch said first digital signal;a second latch to latch said first digital signal or said second digital signal;a first switch connected between said first comparing circuit and said second latch; anda second switch connected between said second comparing circuit and said second latch;wherein said first switch and said second switch operate to switch between an interpolation mode and a parallel mode.