RESOLUTION ENHANCEMENT AND DITHER OF SIGMA-DELTA MODULATOR DIGITAL-TO-ANALOG CONVERTERS

Authors
MAGRATH AJ SANDLER MB
Citation
Aj. Magrath et Mb. Sandler, RESOLUTION ENHANCEMENT AND DITHER OF SIGMA-DELTA MODULATOR DIGITAL-TO-ANALOG CONVERTERS, Electronics Letters, 31(18), 1995, pp. 1540-1542
Citations number
4
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics Letters → ACNP
ISSN journal
00135194
Volume
31
Issue
18
Year of publication
1995
Pages
1540 - 1542
Database
ISI
SICI code
0013-5194(1995)31:18<1540:READOS>2.0.ZU;2-6
Abstract
A technique is proposed to simultaneously dither and enhance the resol ution of sigma-delta digital-to-analogue converters. Increased resolut ion is obtained by modifying the quantisation noise spectrum to give a highpass response. This has the effect of introducing a DC zero in th e noise shaping function to achieve greater resolution for a given loo p order.