AN ANALOG TO DIGITAL CONVERTER

摘要

The present invention relates to an analog to digital converter (ADC) (100). The ADC (100) is comprised of a quantizer component (10) for sampling an incoming analog signal and generating a digital signal; a residue generator component (20) for sampling the incoming analog signal and for generating a digital signal, and a residue generator component (20) for sampling the incoming analog signal and for generating a residual analog signal with respect to the digital signal. The quantizer component (10) is of a dynamic type wherein no pre-amplifier is used therein and is switchably connected to a source (110) of incoming analog signals. The quantizer component (10) is comprised of a comparator circuit (30) having a plurality of first transistors for substantially acting as voltage-controlled resistors therein, and a plurality of second transistors for substantially forming a latch therein. The residue generator (20) is switchably connected to the source (110) of the incoming analog signals. The input of the residue generator component is connected to the output of the quantizer component. The comparator circuit (30) and the switchable connection are for matching the sampling characteristics of the quantizer and the residue generator components (10 & 20).