期刊文献+

一种频率线性可调的正交正弦波振荡器 被引量:2

A Linearly Tunable Quadrature Sinusoidal Oscillator
下载PDF
导出
摘要 设计了一种用于MEMS传感器电容读出的频率可调的正弦波振荡器。振荡器采用OTA-C结构,通过调节工作于线性区的MOS管的漏源电压来改变OTA的gm,从而实现对频率的调节。振荡器可输出四路相位分别为90°,180°,270°和360°的振荡信号。芯片在0.5μm 2P3M CMOS工艺下设计并流片,测试表明在5 V电源电压下振荡频率在180 KHz^1.2 MHz之间线性可调,振荡频率对于电源电压变化的灵敏度为8.1%/V。 A linearly tunable quadrature sinusoidal oscillator for capacitive MEMS sensors detection circuitry is presented. The principle is based on the OTA-C techniques. The frequency is linearly tunable by tuning the Vds of the transistor operating on the triode region, and the oscillator have four outputs with different phase at 90, 180, 270, 360 degrees, respectively. The oscillator is prototyped on a 0.5 μm 2P3M CMOS process, and experimental results show that the frequency can be linearly tuned from 0.18 MHz to 1.2 MHz and the sensitivity to VDD is 8.1%/V.
出处 《北京大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第1期49-53,共5页 Acta Scientiarum Naturalium Universitatis Pekinensis
基金 电子预研项目(51308050201)资助
关键词 OTA—C 振荡器 VCO 正弦波发生器 频率可调 OTA-C oscillator VCO siuusoidal tunable frequency
  • 相关文献

参考文献8

  • 1Wang Zhanfei, Li Zhihong, Ni Xuewen, et ai. A low-noise charge sensitive amplifier for MEMS capacitive sensors. ICSICT-2006, 2006 : 673-675
  • 2De Lima J A. De Lima J A. Agostinho P R. A low-voltage low-sensitivity sinusoidal VCO for DPLL realizations. IEEE, 2004 : 789-792
  • 3De Lima J A. De Lima, Dualibe C. A linearly tunable lowvoltage CMOS transconductor with improved common-mode stability and its application to gm-C filter. IEEE Transactions on Circuits and Systems-Ⅱ: Analogy and Digital Signal Processing, 2001,48(7) : 649-660
  • 4Rodriguez-Vazquez A, Lineres-Barranco B, Huertas J L, et al. On design of voltage-controlled sinusoidal oscillators using OTA's. IEEE Transactions on Circuits and Systems, 1990, 37(2) : 198-211
  • 5Linares-Barranco B, Rodriguez-Vazquez A, SanchezSinencio E, et al. Generation, design and tuning of OTA-C high-frequency sinusoidal oscillators, lEE Proceedings-G, 1992, 139(5) : 557-568
  • 6Juneau T N. Micromachined Dual Input Axis Rate Gyroscope [D]. Berkeley: University of California, 1997
  • 7Park S. Adaptive Control Strategies for MEMS Gyroscopes [D] . Berkeley: University of California, 2000
  • 8Ljung P B. Micromachined Gyroscope with Integrated Electronics [ D ]. Berkeley : University of California, 1997

同被引文献13

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部