一种用于加速度计中的五阶sigma-delta调制器
采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta（∑△）调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4 mW.后仿真结果显示,在1 kHz信号带宽下信噪比为108.6 dB,有效位数约为18位,满足了加速度计对后级高精度调制器的要求....
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| Published in | 电子技术应用 Vol. 41; no. 3; pp. 44 - 47 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
黄淮学院,河南驻马店,463000
2015
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| Subjects | |
| Online Access | Get full text |
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| Abstract | 采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta（∑△）调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4 mW.后仿真结果显示,在1 kHz信号带宽下信噪比为108.6 dB,有效位数约为18位,满足了加速度计对后级高精度调制器的要求. |
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| AbstractList | 采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta（∑△）调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4 mW.后仿真结果显示,在1 kHz信号带宽下信噪比为108.6 dB,有效位数约为18位,满足了加速度计对后级高精度调制器的要求. TN79; 采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta(∑△)调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4 mW.后仿真结果显示,在1 kHz信号带宽下信噪比为108.6 dB,有效位数约为18位,满足了加速度计对后级高精度调制器的要求. |
| Author | 程磊 陈中良 |
| AuthorAffiliation | 黄淮学院,河南驻马店463000 |
| AuthorAffiliation_xml | – name: 黄淮学院,河南驻马店,463000 |
| Author_FL | Cheng Lei Chen Zhongliang |
| Author_FL_xml | – sequence: 1 fullname: Cheng Lei – sequence: 2 fullname: Chen Zhongliang |
| Author_xml | – sequence: 1 fullname: 程磊 陈中良 |
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| ClassificationCodes | TN79 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.16157/j.issn.0258-7998.2015.03.010 |
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| DocumentTitleAlternate | A fifth-order sigma-delta modulator applied in accelerometerA fifth-order sigma-delta modulator applied in accelerometer |
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| EndPage | 47 |
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| Keywords | 根轨迹 modeling root locus 低通∑△调制器 low-pass ∑△ modulator high-order 建模 高阶 |
| Language | Chinese |
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| Notes | Cheng Lei, Chen Zhongliang （Huanghuai University, Zhumadian 463000, China） 11-2305/TN A single-loop fifth-order sigma-delta（∑△） modulator circuit applied in accelerometer is designed using CHRT 0. 35 μm CMOS process. The modulator is modeled and analyzed in MATLAB/Simulink and parameters are optimized to achieve a stable high-order system. The system stability is analyzed based on the root locus. The power dissipation of the circuit is about 3.4 mW with sampling frequency 250 kHz at a 3.3 V power supply. The post-simulation result indicates that the signal-to-noise -ratio （SNR） is 108.6 dB with 18-bit resolution over a signal bandwidth of 1 kHz, which meets the accelerometer＇s demand for subsequent stage high-precision modulator. low-pass ∑△ modulator ; modeling; high-order ; root locus |
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| PublicationTitle | 电子技术应用 |
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| Publisher | 黄淮学院,河南驻马店,463000 |
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| Snippet | 采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta（∑△）调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4... TN79; 采用CHRT 0.35 μm CMOS工艺,设计实现了一种用于加速度计中的单环五阶sigma-delta(∑△)调制器.在MATLAB/Simulink下对调制器进行建模,优化参数实现一个稳定的高阶系统,利用根轨迹法分析了系统的稳定性.该电路在250 kHz采样频率、3.3V电压下功耗为3.4... |
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| StartPage | 44 |
| SubjectTerms | 低通∑△调制器 建模 根轨迹 高阶 |
| Title | 一种用于加速度计中的五阶sigma-delta调制器 |
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