ANALOG-TO-DIGITAL CONVERSION

摘要

In an A/D conversion, digital codes (DC) are obtained on the basis of respective comparisons (A) between an input signal (IN) and at least one reference level (REF). In order to improve the A/D conversion characteristics, the input signal (IN) and the respective reference level (REF) are interchanged (SW) in respect of at least one comparison (A). The digital codes (DC) are processed (POPR) so as to obtain digital output codes (DOC) whose respective signs and magnitudes are, at least on average, substantially independent of any interchanges.