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LMP91000开发板测试问题

Other Parts Discussed in Thread: LMP91000EVM

我司申请了LMP91000EVM和SPIO-4用来测试性能,后续血糖仪产品准备采用集成模拟前端的产品,在测试过程有以下问题需咨询:

1、我们需要测试的三电极传感器模拟电路如图一所示(电阻可做相应调整),如需使加压(WE-RE的电压)为500mV,软件应该怎么配置。如需测试电路各电压及频率下的阻抗应该怎么配置.配置时需要注意哪些点?

2、下图为开发板测试时的设置,作为简易测试,图一中R1与R5电阻都配置为1M。R2,R3,R4短接。开始运行后万用表测得CE电压=751.1mv,RE电压=1V,WE电压=1.25V,但软件显示输出电压为660mv左右(正常的输出电压应该是 1.25+0.0875=1.3375V)。此处输出的电压具体代表的是什么?