Successive approximation analog-to-digital converter (ADC) with dynamic search algorithm

摘要

Aspects of a method and system for a successive approximation analog-to-digital converter with dynamic search algorithms are provided. In some embodiments, a successive approximation analog-to-digital converter includes a digital-to-analog converter, a comparator, and a search and decode logic modules which cooperate to generate a digital output code representative of the analog input voltage based on a dynamic search algorithm. The dynamic search algorithms may alter a sequence of reference voltages used to successively approximate the analog input voltage based on one or more characteristics of the analog input voltage.

主权项

1. A method of an analog-to-digital converter, comprising:
determining, by the analog-to-digital converter, one or more probabilities, each of which corresponds to a probability that an analog input voltage will be in a corresponding one of a plurality of voltage ranges; selecting, by the analog-to-digital converter, a reference voltage based on the determined one or more probabilities; comparing, by the analog-to-digital converter, the analog input voltage to the reference voltage to obtain a comparison output; updating, by the analog-to-digital converter, the reference voltage based on the comparison output; and repeating, one or more times by the analog-to-digital converter, said comparing and said updating to obtain a digital output code representative of the analog input voltage.