| 高线性度低功耗OTA的实现 |
| |
| 引用本文： | 陈婷,李志军,曾以成. 高线性度低功耗OTA的实现[J]. 云南大学学报(自然科学版), 2014, 36(5): 661-666. DOI: 10.7540/j.ynu.20130714 |
| |
| 作者姓名： | 陈婷 李志军 曾以成 |
| |
| 作者单位： | 1.（1.湘潭大学 材料与光电物理学院， 湖南 湘潭 411105；2.湘潭大学 信息工程学院， 湖南 湘潭 411105） |
| |
| 基金项目： | 国家自然科学基金(61176032,61233010) |
| |
| 摘 要： | 采用衰减器技术和负反馈设计了一种新的高线性度低功耗的跨导运算放大器（OTA）.提出的OTA能有效地抑制3次谐波分量（HD3）从而使其线性度得到很大改善,同时它可以通过改变衰减器因子实现跨导可调.电路采用TSMC 0.18 m工艺在Cadence的Spectre 中进行设计与仿真，结果表明它的线性范围为-0.65~0.65 V,功耗仅为0.73 mW.最后通过一个四阶OTA-C滤波器验证了该OTA的性能.
|
| 关 键 词： | 运算跨导放大器(OTA) 谐波分量 线性度 滤波器 |
Realization of high linearity and low power OTA |
| |
| CHEN Ting;LI Zhi-jun;ZENG Yi-cheng. Realization of high linearity and low power OTA[J]. Journal of Yunnan University(Natural Sciences), 2014, 36(5): 661-666. DOI: 10.7540/j.ynu.20130714 |
| |
| Authors: | CHEN Ting LI Zhi-jun ZENG Yi-cheng |
| |
| Affiliation: | 1.(1.College of Materials and Electro-optical Physics,Xiangtan University,Xiangtan 411105,China; |
| |
| Abstract: | A novel Operational Transconductance Amplifier (OTA) with wide linear range and low power consumption is presented in this paper by using the technigue of signal attenuation followed by source degeneration and negative feedback of the proposed OTA.The linearity is effectively improved by suppressing harmonic components,and the transconductance can be tuned by changing attenuator factor.This OTA is designed and simulated by Cadence Spectre with TSMC 0.18 m technology,and the simulation results show that the linear range is -0.650.65 V,and the power consumption is only 0.73 mW.The performance of the proposed OTA is confirmed through a fourth-order OTA-C filter. |
| |
| Keywords: | Operational Transconductance Amplifier(OTA) harmonic distortion linearity filter |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《云南大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《云南大学学报(自然科学版)》下载全文 |
