Improved Signal Acquisition Rate For The Tracking Analog To Digital Converter
Original Publication Date: 1979-Jun-01
Included in the Prior Art Database: 2005-Feb-20
A conventional tracking analog to digital converter (ADC) consists of a comparator, up/down counter and digital to analog converter (DAC). The main disadvantage inherent in the tracking ADC is the long period of time required for the converted digital output to become valid, when the analog input changes by a substantial fraction of full scale. The method described herein is one of greatly improving the acquisition time of tracking ADCs, with minimal addition of extra hardware.