Title :
A low-power triple-mode sigma-delta DAC for reconfigurable (WCDMA/TD-SCDMA/GSM) transmitters
Author :
Qiu, Dong ; Yi, Ting ; Hong, Zhiliang
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China
Abstract :
This paper presents a ΣΔ DAC with channel filtering for multi-standard wireless transmitters. It can be digitally programmed to satisfy specifications of WCDMA, TD-SCDMA and GSM standards. The measured SFDR are 62.8/60.1/75.5 dB for WCDMA/ TD-SCDMA/ GSM mode, respectively. The ΣΔ DAC manufactured in SMIC 0.13-μm CMOS process occupies a 0.72 mm2 die area, while drawing 5.52/4.82/3.04 mW in WCDMA/TD-SCDMA/GSM mode from a single 1.2-V supply voltage.
Keywords :
cellular radio; code division multiple access; digital-analogue conversion; radio transmitters; sigma-delta modulation; ΣΔ DAC; CMOS process; GSM; SFDR; SMIC; TD-SCDMA; WCDMA; channel Altering; low-power triple-mode sigma-delta DAC; multistandard wireless transmitters; size 0.13 mum; voltage 1.2 V; Digital filters; GSM; Modulation; Signal to noise ratio; Spread spectrum communication; Time division synchronous code division multiple access;
Conference_Titel :
Design Automation Conference (ASP-DAC), 2011 16th Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7515-5
DOI :
10.1109/ASPDAC.2011.5722167
