半导体学报2011，Vol.32Issue(2)：96-101,6.DOI:10.1088/1674-4926/32/2/025005
A low-power triple-mode sigma-delta DAC for reconfigurable (WCDMA/ TD-SCDMA/GSM) transmitters*
A low-power triple-mode sigma-delta DAC for reconfigurable (WCDMA/ TD-SCDMA/GSM) transmitters*
摘要
Abstract
A sigma-delta (ΣΔ) DAC with channel filtering for multi-standard wireless transmitters used in the software-defined-radio (SDR) system is presented. The conversion frequency, transfer function of the digital filter and the ΣΔ 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 Σ Δ DAC fabricated in SMIC 0.13-μm CMOS process occupies a die area of 0.72 mm2, 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.关键词
ΣΔ digital-to-analog converter/ low-power/ reconfigurableKey words
ΣΔ digital-to-analog converter/ low-power/ reconfigurable引用本文复制引用
Qiu Dong,Yi Ting,Hong Zhiliang..A low-power triple-mode sigma-delta DAC for reconfigurable (WCDMA/ TD-SCDMA/GSM) transmitters*[J].半导体学报,2011,32(2):96-101,6.基金项目
Project supported by the National High Technology Research and Development Program of China (No.2009AA011605). （No.2009AA011605）
