2GS/s 3b /spl Delta//spl Sigma/调制DAC，带可调开关电容带通DAC失配整形器

2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519) Pub Date : 2004-09-13 DOI:10.1109/ISSCC.2004.1332746

T. Kaplan, J. Jensen, C. Fields, M. Chang

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引用次数: 4

摘要

提出了一种3b /spl δ //spl σ /调制失配型DAC。失配整形器使用7个可调的1.5b开关电容带通/spl Delta//spl Sigma/调制器来动态地将数字信号路由到dac。该DAC可产生250 ~ 750MHz窄带信号，信噪比/spl /68dB, SFDR /spl /74dB，互调失真-80dBc。

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A 2GS/s 3b /spl Delta//spl Sigma/-modulated DAC with a tunable switched-capacitor bandpass DAC mismatch shaper

A 3b /spl Delta//spl Sigma/-modulated mismatch-shaped DAC is presented. The mismatch shaper uses 7 tunable 1.5b switched-capacitor bandpass /spl Delta//spl Sigma/ modulators to dynamically route the digital signals to the DACs. The DAC can generate narrowband signals from 250 to 750MHz with /spl ges/68dB SNR, /spl ges/74dB SFDR, and -80dBc intermodulation distortion.

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2004 IEEE International Solid-State Circuits Conference (IEEE Cat. No.04CH37519)

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