BANDPASS SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER AND MASH SIGMA-DELTA CONVERTER INCORPORATING SAME

摘要

The invention concerns a passband Sigma-Delta analog-to-digital converter comprising a first resonator (101) and a second order second resonator (102), preferably of second order, whereof the respective central frequencies are adjustable, so as to enable a high SNR in a relatively wide frequency band, and a MASH Sigma-Delta analog-to-digital converter incorporating at least two such cascaded converters.