Title :
A 47.3-MHz SAW resonator based CMOS second-order bandpass sigma-delta modulator with 54-dB peak SNDR
Author :
Yu, Rui ; Xu, Yong Ping
Author_Institution :
Dept. of Electr. & Comput. Eng., Singapore Nat. Univ., Singapore
Abstract :
A second-order bandpass sigma-delta modulator employing a SAW resonator is described. The proposed modulator is fabricated in a 0.35-μm CMOS process and tested with an off-chip 47.3-MHz SAW resonator. The measured results show a dynamic range of 57dB and a SNDR of 54dB in a 200-kHz signal bandwidth when sampled at 189.2 MHz. The modulator operates under a 3.3-V single supply with a power dissipation of 30mW.
Keywords :
CMOS integrated circuits; band-pass filters; modulators; sigma-delta modulation; surface acoustic wave resonators; 0.35 micron; 189.2 MHz; 200 kHz; 3.3 V; 30 mW; 47.3 MHz; CMOS process; SAW resonator; power dissipation; second-order bandpass sigma-delta modulator; Band pass filters; Bandwidth; Capacitance; Circuits; Delta-sigma modulation; Q factor; Resonant frequency; Resonator filters; Surface acoustic waves; Transfer functions;
Conference_Titel :
Custom Integrated Circuits Conference, 2005. Proceedings of the IEEE 2005
Print_ISBN :
0-7803-9023-7
DOI :
10.1109/CICC.2005.1568643
