Other Parts Discussed in Thread: LMP7721 Use LMP7721 to create a logarithmic current-to-voltage converter. Can I use a diode to replace R1.
But if consider the effect of temperature, use triode to replace is better or not?
Other Parts Discussed in Thread: LMP7721 , LMP7715 使用LMP7721做微电流跨阻放大器,输入信号电流为几pA到几nA的范围,看手册对于这种微电流放大需要对输入信号进行做Guard,那么Guard应该怎么设计?将输入信号围一圈,然后与LMP7721的NC引脚连接吗?Guard应该与输入端同电位才能起保护作用,那么如何让Guard与输入同电位?这个电路应该怎么设计?
Other Parts Discussed in Thread: LMP7721 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。 https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/974924/lmp7721-transimpedance-amplifier-for-low-shunt-resistance-photodiode 器件型号…