电学中的测量技术涉及范围非常广,电流测量在电学计量中占有非常重要的位置。如何精确地进行电流测量是精密测量的一大难题。传统的电流检测电路多采用运算放大芯片与片外电流检测电路相结合的方式,电路集成度很低,需要较多的接口和资源才能完成对电路的检测。本文把所有电路部分都集成在一块芯片上,包括检测电阻,运算放大器电路及模拟转数字转换电路,从而在电路内部可以进行电流检测,使电路更好的集成化。前置电路使用二级共源共栅结构的运算放大器,减小沟道长度调制效应造成的电流误差。10位SAR ADC中采用电容驱动能力强的传输门保证了模数转化器的有效精度。比较器模块采用再生锁存器与迟滞比较器作为基础单元组合解决精密测量的问题。本设计可以作为嵌入芯片内的一小部分而检测芯片中的微小电流1mA~100mA,工作电压在1.8v左右,电流检测精度预期达到10uA的需求。The measurement technology in electricity involves a wide range,and current measurement plays a very important position in electrical measurement.How to accurately measure current is a big problem in precision measurement. The traditional current detecting circuit adopts the combination of the operational amplifier chip and theoff-chip current detecting circuit, The circuit integration is very low, and more interfaces and resources are needed tocomplete the circuit detection.This topic integrates all the circuit parts into one chip, including detection resistance, operational amplifier circuit andanalog to digital conversion circuit. Highly integrated circuit makes the external resources on the chip more intensive,so that current detection can be carried out inside the circuit, so that the circuit can be better integrated. Thefront-end circuit of this project uses two-stage cascade operational amplifier and cascade tube to reduce the currenterror caused by channel length modulation effect. In 10-bit SAR ADC, the transmission gate with strong capacitivedriving ability ensures the effective accuracy of the analog-to-digital converter. Comparator module uses regenerativelatch and hysteresis comparator as basic unit to solve the difficult problem of precision measurement. This topic can beused as a small part of the embedded chip to detect the micro-current in the chip 1 mA~100 mA, the working voltageis about 1.8v, and the current detection accuracy is expected to reach the requirement of 10 uA.
上传时间： 2022-04-03
上传用户：
这是一本英文版的MPC的MATLAB教程，讲这一块的资料太少了，故上传一本。MPC is one of the few areas that has received on-going interest from researchers in both the industrial and cademic communities.Four major aspects of model predictive control make the design methodology attractive to both practitioners and academics.This is particularly attractive to industry where tight profit margins and limits on the process operation are inevitably present. The third aspect is the ability to perform on-line process optimization. The fourth aspect is the simplicity of the design framework in handling all these complex issues.
标签： 模型预测控制
上传时间： 2022-05-05
上传用户：zhanglei193
学习Direct3D中的2D-Focus.On.2D.in.Direct3D.-.fly
标签： Direct3D D-Focus Direct fly
上传时间： 2013-08-04
上传用户：eeworm
EDA Tools in FPGA用于开发FPGA的EDA工具:随着集成电路和计算机技术的发展，越来越多的公司不断的开发出更加好用的EDA工具给广大的
上传时间： 2013-04-24
上传用户：ywqaxiwang
FEATURES Unique 1-Wire interface requires only one port pin for communication Multidrop capability simplifies distributed temperature sensing applications Requires no external components Can be powered from data line. Power supply range is 3.0V to 5.5V Zero standby power required Measures temperatures from -55°C to +125°C. Fahrenheit equivalent is -67°F to +257°F ±0.5°C accuracy from -10°C to +85°C Thermometer resolution is programmable from 9 to 12 bits Converts 12-bit temperature to digital word in 750 ms (max.) User-definable, nonvolatile temperature alarm settings Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition) Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
上传时间： 2013-08-04
上传用户：CHENKAI
·Applied Mathematics in Integrated Navigation Systems
标签： nbsp Mathematics Integrated Navigation
上传时间： 2013-07-17
上传用户：liu_yuankang
ink in c++.chm C++编程思想 经典书籍 非常方便，需要的请下载吧。
上传时间： 2013-06-12
上传用户：yanming8525826
Protel99se鼠标增强软件2.0: 2.0版本改名为“Protel99se鼠标增强软件”，是因为使用普通三键鼠标也可实现 放大和缩小功能。 1.0版本功能：(软件名称：“Protel99se增加鼠标滚轮放大缩小功能”) 向上滚动滚轮 --> Zoom In 放大（PageUp键） 向下滚动滚轮 --> Zoom Out 缩小（PageDown键） 单击中键 --> Zoom Pan 移动屏幕 (Home键) 2.0版本新增功能： 1.在手动布局时，按鼠标左键移动元件时，再点击右键，可旋转元件。（非常好用的功能） 2.增加鼠标中键手形功能，按住中键，移动鼠标，放开中键，为一个手形功能。 按中键向左移动 --> 在画线时退回上一步（退格键） 按中键向右移动 --> 删除有焦点的对象（Delete键） 按中键向上移动 --> 放置元件时，进入修改元件属性 （Tab键） 按中键向下移动 --> 放置元件时，用于旋转元件（空格键） 按中键向左上移动 --> Zoom Out 缩小（PageDown键） 按中键向右下移动 --> Zoom In 放大（PageUp键） 按中键向右上移动 --> Clear 删除所有选择的对象（Ctrl+Delete键） 按中键向左下移动 --> Fit All Objects 显示所有元件（Ctrl+PageDown键） 3.在PCB、SCH、PCBLib、SCHLib四个编辑器中都能实现本软件的所有功能。
上传时间： 2013-07-02
上传用户：电子世界
基于FPGA的单总线(ONE-WIRE)协议的实现源代码.
上传时间： 2013-08-30
上传用户：wyc199288
Practical FPGA Programming in C \r\nBy David Pellerin, Scott Thibault \r\nPublisher: Prentice Hall PTR \r\nPub Date: April 22, 2005 \r\nISBN: 0-13-154318-0 \r\nPages: 464 \r\n
标签： Programming Practical FPGA in
上传时间： 2013-08-31
上传用户：firstbyte
