| 低功耗霍尔电压放大器 |
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| 引用本文： | 刘文啟,朱阳军,陆江.低功耗霍尔电压放大器[J].传感器世界,2012,18(6):6-9. |
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| 作者姓名： | 刘文啟 朱阳军 陆江 |
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| 作者单位： | 中国科学院微电子研究所 100029 |
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| 摘 要： | 基于霍尔传感器低功耗的要求,设计一种低功耗、可以放大微弱霍尔电压的放大器.利用MOSFET工作在亚阈区超低功耗特性,设计一种CMOS二级运算放大器.这种亚阈区放大器结构简单,工作在2.5V～3.5V电压下,电路开环增益可以达到90dB.
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| 关 键 词： | 霍尔电压 低功耗 亚阈区 运算放大器 开环增益 |
Design of a low power amplifier for Hall voltage |
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| LIU Wen-qi
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ZHU Yang-jun
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LU Jiang.Design of a low power amplifier for Hall voltage[J].Sensor World,2012,18(6):6-9. |
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| Authors: | LIU Wen-qi ZHU Yang-jun LU Jiang |
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| Affiliation: | (Institute of Microelectronics,Chinese Academy of Sciences,Beijing 201203,China) |
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| Abstract: | Based on low-power requirements of Hall-sensors,a low-power amplifier for amplifying small Hall-voltage signals is designed in this paper.According to super-low power features of MOSFET working in subthreshold region,a simple CMOS two-stage operational amplifier is designed.This amplifier can work between working voltage from 2.5V to 3.5V,and the open-loop gain can get 90dB. |
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| Keywords: | Hall voltage power consumption subthreshold region operational amplifier open-loop gain |
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