各位老大,没接触过放大电路的领域. 但现在要做个放大的设计.请帮我看下,谢谢!
需要测量一个电池的放电电流. 转换成测量这个电池放电回路上一个电阻的电压问题.
该电池电压3.6V. 放电电流一般是9uA. 电阻为100欧左右. 所以一般情况下,电压值为0.9mV左右。
但也有的精度很高的,功耗只有0.1mV. 我的单片机是12位的.测量精度没这么高. 所以需要放大.
请教各位,什么样的差分放大芯片适合我这个电路.且能放大1000倍,
电路设计中需要注意那些要点.
谢谢!
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