Title :
Efficient dithering of sigma-delta modulators with adaptive bit flipping
Author :
Magrath, A.J. ; Sandler, M.B.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK
fDate :
5/25/1995 12:00:00 AM
Abstract :
A new technique is presented for dithering single bit sigma-delta modulator (SDM) A/D and D/A converters in the digital domain. The system operates by detecting and randomising the limit cycle oscillations responsible for baseband tones. The system is efficient to implement in hardware and does not surfer from the analogue dither that is required in conventional SDM A/D converters
Keywords :
digital-analogue conversion; limit cycles; modulators; sigma-delta modulation; A/D converters; ADC; D/A converters; DAC; adaptive bit flipping; baseband tones; digital domain; dithering; limit cycle oscillations; sigma-delta modulators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950587
