Title :
An 11-Bit 330MHz 8X OSR /spl Sigma/-spl Delta/ Modulator for Next-Generation WLAN
Author :
Paramesh, Jeyanandh ; Bishop, Ralph ; Soumyanath, K. ; Allstot, David
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA
Abstract :
A 2-2 cascaded Sigma-Delta modulator with 4-bit internal quantizers digitizes WLAN signals with 40MSPS conversion rate. Implemented in 90nm CMOS using nominal-Vt devices and metal comb capacitors, it occupies 1.3mm2 core area, achieves 67dB SNR, 63dB peak SNDR and 67dB peak SFDR at 330MHz, and dissipates 78mW from a 1.4V supply
Keywords :
CMOS digital integrated circuits; capacitors; cascade networks; quantisation (signal); sigma-delta modulation; wireless LAN; 1.4 V; 78 mW; 90 nm; CMOS; cascaded sigma-delta modulator; internal quantizer; metal comb capacitors; next-generation WLAN; CMOS technology; Capacitors; Delta modulation; Digital modulation; Operational amplifiers; Pipelines; Sampling methods; Signal to noise ratio; USA Councils; Wireless LAN;
Conference_Titel :
VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0006-6
DOI :
10.1109/VLSIC.2006.1705362
