| 一种瞬时浮点ADC电路的设计 |
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| 引用本文： | 龚成龙,马超. 一种瞬时浮点ADC电路的设计[J]. 工业仪表与自动化装置, 2006, 0(2): 26-29 |
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| 作者姓名： | 龚成龙 马超 |
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| 作者单位： | 淮海工学院,电子工程系,江苏,连云港,222005;淮海工学院,电子工程系,江苏,连云港,222005 |
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| 基金项目： | 江苏省高校自然科学基金 |
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| 摘 要： | 提出了一种瞬时浮点ADC电路的设计方案,论述了循环放大与自动校零算法、浮点ADC原理及其实现方法.该电路可实现失调误差自动补偿、快速增益自适应控制以及浮点模数转换等,其全局和瞬时动态范围分别达到150 dB、90 dB,采样速率达80～130 ks/s,有效精度达25 bit.
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| 关 键 词： | 宽动态瞬变信号 瞬时浮点前置放大器 自动校零 循环放大器 浮点ADC |
| 文章编号： | 1000-0682（2006）02-0026-04 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005-05-08 |
The design of an instantaneous floating-point ADC circuit |
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| GONG Cheng-long,MA Chao. The design of an instantaneous floating-point ADC circuit[J]. Industrial Instrumentation & Automation, 2006, 0(2): 26-29 |
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| Authors: | GONG Cheng-long MA Chao |
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| Affiliation: | Electronic Engineering Dept of Huaihai hutitute of Technology, Jiangsu Lianyungang 222005, China |
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| Abstract: | This paper presents the design proposal of an floating-point including its working principle ,and discusses the cycle amplification and the automatic zero adjustment algorithm. The circuit can make self-compensation for offset errors and perform automatic gain control and floating-point A/D conversion fleetly. The circuit is provided with a full dynamic range of 150 dB, an instantaneous dynamic range of 90 dB, a sampling speed of 80 - 130 ksps and an accuracy of 25 bits. |
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| Keywords: | wide-range dynamic instantaneous signal instantaneous floating-point preamplifier auto- matic zero adjustment cycle amplifier floating-point ADC |
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