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一种宽输入动态范围跨阻放大器的设计 被引量：2

A Transimpedance Amplifier with Wide Input Dynamic Range
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摘要 利用对数放大的增益可变性特点,设计出基于对数放大的跨阻放大器,克服了采用传统AGC调整跨阻的复杂性和低可靠性;同时,避免了采用肖特基二极管箝位方法的工艺局限性,有效扩展了跨阻放大器的输入动态范围。在详细分析跨阻动态特性及温度特性的基础上,分析了电路噪声性能,并进行了仿真验证。试验样片的测试结果进一步证明所提出的方法是有效的。 A transimpedance amplifier based on the variable gain characteristics of logarithmic amplification is implemented, which is easier to implement and more reliable than the conventional transimpedance amplifier based on AGC. Furthermore, unlike the transimpedance amplifier based on clamping function of shottky diode, the proposed device is not limited by process. The input dynamic range is considerably extended. The noise performance of the trans-impedance amplifier is analyzed, as well as its dynamic and temperature characteristics. The analysis is verified with simulation, and test results of a prototype chip further confirm the effectiveness of the proposed method.
作者 付生猛 郑兆青
机构地区 华中科技大学图像识别与人工智能研究所 华中科技大学图像信息处理与智能控制教育部重点实验室
出处 《微电子学》 CAS CSCD 北大核心 2006年第2期201-204,共4页 Microelectronics
关键词 跨阻放大器 输入动态范围 对数放大 Transimpedance amplifier Input dynamic range Logarithmic amplification
分类号 TN722 [电子电信—电路与系统]
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参考文献7

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同被引文献10

  • 1JUNG D Y, PARK S H, LEE K H. An InGaP/GaAs HBT transimpedance amplifier for 10 Gbps optical eommunication [C] // Proc Int Conf Microwave and Millimeter Wave Technology. Korea. 2002: 974-976.
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微电子学
2006年 第2期

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