A low-power triple-mode sigma-delta DAC for reconfigurable (WCDMA/TD-SCDMA/GSM) transmitters

被引：2
|
作者：
Qiu Dong [1 ]
Yi Ting [1 ]
Hong Zhiliang [1 ]
机构：
[1] Fudan Univ, State Key Lab ASIC & Syst, Shanghai 201203, Peoples R China
来源：
JOURNAL OF SEMICONDUCTORS | 2011年 / 32卷 / 02期
基金：
国家高技术研究发展计划(863计划);
关键词：
Sigma Delta digital-to-analog converter; low-power; reconfigurable;
D O I：
10.1088/1674-4926/32/2/025005
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A sigma-delta (Sigma Delta/DAC with channel filtering for multi-standard wireless transmitters used in the softwar Sigma Delta modulator, word-length of the IDAC and cut-off frequency of the analog reconstruction filter can be digitally programmed to satisfy specifications of WCDMA, TD-SCDMA and GSM standards. The Sigma Delta DAC fabricated in SMIC 0.13-mu m CMOS process occupies a die area of 0.72 mm(2), while consuming 5.52/4.82/3.04 mW in WCDMA/TD-SCDMA/GSM mode from a single 1.2-V supply voltage. The measured SFDR is 62.8/60.1/75.5 dB for WCDMA/TD-SCDMA/GSM mode, respectively.
引用
收藏
页数：6
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