课程设计任务书学生姓名:专业班级:电信0902指导教师:刘运苟工作单位:信息工程学院题目：高输入阻抗放大器设计初始条件：具备模拟电子电路的理论知识；具备模拟电路基本电路的设计能力；具备模拟电路的基本调试手段；自选相关电子器件；可以使用实验室仪器调试。要求完成的主要任务：（包括课程设计工作量及其技术要求，以及说明书撰写等具体要求）v?100v1、输入电压和输出电压函数关系为：io2、输入信号频率不大于100HZ3、在室温下，若信号源内阻在100KΩ至1MΩ变化时，信号源开路电压为50mv～100mv时，放大器误差不大于1％4、要求共模抑制比≥60dB5、设计电源；6、焊接：采用实验板完成，不得使用面包板。4、安装调试并完成符合学校要求的设计说明书时间安排：十八周一周，其中3天硬件设计，2天硬件调试指导教师签名：年月日系主任（或责任教师）签名：年月日目录摘要·······································································I1原理与器件的选择··························································11.1LM7815、LM7915的简介··················································11.2OP07CP集成芯片的介绍··················································22工作原理及原理图··························································32.1框图··································································32.2直流电源的电路图及原理················································32.3高输入阻抗差动放大器的电路图及原理····································53Protues仿真与结果分析·····················································73.1仿真波形图····························································73.2结果分析······························································74电路焊接··································································85心得体会··································································96致谢·····································································10参考文献···································································11摘要要实现高输入阻抗一个重要的任务就是要能够抑制零点漂移，另一个重要的任务就是能够放大偏差信号。抑制零点漂移的可以采用下面几种方法：（1）利用直流负反馈，稳定电路的静态工作点。（2）采用温度特性较好的高性能器件。（3）采用温度补偿法，利用热敏器件的参数随温度变化而变化的特性，抵消电路随温度变化而变化的影响。采用差分放大电路，利用特性相同的对管，使它们的温度漂移互相抵消。本实验是以集成芯片OP07C设计的高输入阻抗放大电路。为了提高输入阻抗，电路采用同相输入端加信号电压的方法，同时为了保证两个信号源都加到运放的同相输入端，采用两个同相放大电路组成第一级放大。电路结构对称，除了具有高输入阻抗外，还具有很高的共模抑制比...