| 一种采用数字激励测试的MASH结构ΣΔ模数转换器 |
| |
| 引用本文： | 曹政新,胡平,孙烨辉,许长喜,李奇,熊绍珍. 一种采用数字激励测试的MASH结构ΣΔ模数转换器[J]. 固体电子学研究与进展, 2008, 28(1): 100-104 |
| |
| 作者姓名： | 曹政新 胡平 孙烨辉 许长喜 李奇 熊绍珍 |
| |
| 作者单位： | 南开大学光电子所,天津,300071;天津工业大学机械工程学院工业设计教研室,天津,300160 |
| |
| 基金项目： | 天津市科委科技攻关计划培育项目 , 国家自然科学基金 |
| |
| 摘 要： | 介绍了一种采用数字激励源测试的MASH(MultistAge noise SHaping)2-2结构ΣΔ模数转换器。为了简化测试过程,降低测试成本,该模数转换器加入辅助测试电路,无需高精度的测试仪器,仍可测得ΣΔ模数转换器性能参数。文中对采用数字激励源测试的原理进行阐述,并对MASH2-2结构ΣΔ模数转换器进行设计。该转换器采用1st Silicon0.25μm1P4M工艺,在电源电压3V,过采样时钟频率6.144MHz的条件下,利用传统的模拟测试和数字激励源测试证明其在0~20kHz频率范围内,SNDR>89dB。测试的结果证明了采用数字激励测试方案的正确性。
|
| 关 键 词： | ΣΔ调制器 数字激励源 模数转换器 |
| 文章编号： | 1000-3819(2008)01-100-05 |
| 修稿时间： | 2007-01-29 |
A MASH Sigma-Delta A/D Converter by Using Digital Stimulus Test Method |
| |
| CAO Zhengxin,HU Ping,SUN Yehui,XU Changxi,LI Qi,XIONG Shaozhen. A MASH Sigma-Delta A/D Converter by Using Digital Stimulus Test Method[J]. Research & Progress of Solid State Electronics, 2008, 28(1): 100-104 |
| |
| Authors: | CAO Zhengxin HU Ping SUN Yehui XU Changxi LI Qi XIONG Shaozhen |
| |
| Affiliation: | CAO Zhengxin 1 HU Ping2 SUN Yehui2 XU Changxi2 LI Qi2 XIONG Shaozhen2(1Institute of Photo-electronics,Nankai University,Tianjin,300071,CHN)(2College of Mechanical Engineering,Industry Design Office,Tianjin University of Science & Technology,300160,CHN) |
| |
| Abstract: | This paper introduce a MASH(MultistAge noise SHaping)2-2 modulator which has been tested by the digital stimulus source.To simplify the test process and cut down the test cost,an auxiliary test circuit has been added which could provide the precise parameters of the modulator without costly high performance test equipments.The test theory based on digital stimulus source has been depicted in this paper and the MASH 2-2 analog modulator is fabricated with 1st silicon 0.25 μm 1P4M technology.When the supply voltage is 3 V and the over-sampling clock is 6.144 MHz,the SNDR of the modulator is above 89 dB in 0～20 kHz frequency domain by using both the conventional analog test method and digital stimulus source test method.It is testified that the digital stimulus source test method is correct. |
| |
| Keywords: | ΣΔ modulator digital stimulus source ADC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
