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过采样技术给在VLSI领域的高精度数模转化器的实现提供帮助.该文提供了一个在时间上连续的2-2-2级联Sigma-Delta调制器结构设计.该级联调制器由3级二阶振荡环路滤波器,1-bit量化器和反馈部分的数模转化器组成.在MATLAB环境下,通过大量仿真验证最后得出:在采样率为50 MHz、5V工作电压、过采样比为32的条件下,利用CMOS 0.18μm 工艺,该调制器其SQNR为87 dB.
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电子器件
ISSN: 1005-9490
CN: 32-1416/TN
Year: 2012
Issue: 3
Volume: 35
Page: 327-330
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 1
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