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十万火急!!求教关于ina2332运放的参考电压问题

Other Parts Discussed in Thread: INA2332, REF3225, LMV431

电路我放到附件里面了,ina2332的VrefA和VrefB我都是用的电阻直接分压得到,但是这样的话电阻阻值的不精确会导致两路参考电压的不一样,对同样的输入信号运放输出的值也会略有不同,我想用3片做六路精密运放,请问有没有隔离类芯片像线性光耦之类的,一路输入,多路输出,并且输出电压和输入电压相同,为2.5v左右的芯片,,为六路运放提供相同的参考电压