Title :
Use of dynamic element matching in a multi-path sigma-delta modulator
Author :
Ferragina, Vincenzo ; Fornasari, Andrea ; Gatti, Umberto ; Malcovati, Piero ; Maloberti, Franco ; Monfasani, Luigi
Author_Institution :
Dept. of Electr. Eng., Pavia Univ., Italy
Abstract :
This paper describes the use of dynamic element matching in a multi-bit, multi-path sigma-delta modulators. The technique achieves noise shaping and enables the use of elements with 0.5% mismatch. Simulation results at the behavioral and gate level shows the possibility to achieve an SNR as large as 85 dB and SFDR of 90 dB with a 320 MHz equivalent clock frequency.
Keywords :
circuit simulation; integrated circuit noise; modulators; sigma-delta modulation; 320 MHz; SFDR; SNR; behavioral level; dynamic element matching; equivalent clock frequency; gate level; multibit sigma-delta modulator; multipath sigma-delta modulator; noise shaping; Bandwidth; Clocks; Delta-sigma modulation; Frequency; Mobile communication; Noise shaping; Sampling methods; Signal to noise ratio; Telecommunication standards; Transfer functions;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328278
