三位半数字电压表电路的设计

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1、.目录一、题目及设计目的.......................................................................................................2二、设计要求......................................................................................................................2三、方案设计与论证..

2、.....................................................................................................2（1）主控芯片.....................................................................................................2（2）显示部分..................................

3、...................................................................2四、设计原理及电路图.................................................................................................3（1）数字电压表原理框图................................................................

4、.....................................3量程转换模块.............................................................................................................3基准电压模块............................................................................................

5、.................3A/D电路模块.............................................................................................................3字形译码驱动电路模块.............................................................................................4显示电路模块.......

6、......................................................................................................4（2）实验芯片简介.................................................................................................................5三位半A／D转换器MC14433..........

7、.......................................................................5七段锁存-译码-驱动器CD4511................................................................................8七路达林顿驱动器阵列MC1413..................................................................

8、............9高精度低漂移能隙基准电源MC1403......................................................................9五、元器件清单...............................................................................................................11六、参数计算与仿真图....