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有没有供电范围在250V左右的高压运放

Other Parts Discussed in Thread: OPA454

我这边经常需要测试200V左右的信号,运放的输入偏置电流在10pA以下。

现在用的LTC的LTC6090,但是电压还不够高。

不知道TI有没有更好的解决方案