Title :
Resolution enhancement and dither of sigma-delta modulator digital-to-analogue converters
Author :
Sandler, Mark B.
fDate :
8/31/1995 12:00:00 AM
Abstract :
A technique is proposed to simultaneously dither and enhance the resolution of sigma-delta digital-to-analogue converters. Increased resolution is obtained by modifying the quantisation noise spectrum to give a highpass response. This has the effect of introducing a DC zero in the noise shaping function to achieve greater resolution for a given loop order
Keywords :
circuit noise; digital-analogue conversion; quantisation (signal); sigma-delta modulation; DC zero; bit flipping algorithm; digital-to-analogue converters; dither; highpass response; noise shaping function; quantisation noise spectrum; resolution enhancement; sigma-delta DAC; sigma-delta modulator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19951063
