用幂法与反幂法求矩阵的最大最小特征值,以及与某个值相近的特征值,模最小的特征值,条件数与行列式
上传时间: 2017-08-23
上传用户:chenxichenyue
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:
TI电路设计指导手册:运算放大器。高清文字版,模电学习好资料~
上传时间: 2022-06-18
上传用户:
模电课件大全
标签: 模电
上传时间: 2013-04-15
上传用户:eeworm
电子技术 基础,模电,数电,通讯 PPT完整版
上传时间: 2013-04-15
上传用户:eeworm
管材挤压模产生缺陷的原因及其改进措施
上传时间: 2013-04-15
上传用户:eeworm
灯饰横梁压形整形复合模设计与工艺分析
上传时间: 2013-06-02
上传用户:eeworm
基于网络的塑料异型材挤出模CAD系统的研究
上传时间: 2013-04-15
上传用户:eeworm
注射模设计方法与程序
上传时间: 2013-04-15
上传用户:eeworm
薄壁圆管弯曲模设计
标签: 模
上传时间: 2013-05-17
上传用户:eeworm