帮我看一下电流互感器的采样电路有没有问题
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I think in place of R71, R63 and C144, you can keep a small rc filter mentioned as Rfa/Rfb and Cfa/Cfb in the datasheet, which are used to mitigate any unwanted noise seen by the CSA/CSB pin. You can take a look at the current sense transformer equivalent circuit and the typical schematic mentioned in the datasheet
The parameters for the circuit can be obtained from the design calculator of UCC28070. You can download the calculator in the following link
https://www.ti.com/tool/download/SLUC114
You can get the required parameters of the Offset voltage, ramp voltage and the CT reset circuit from the design calculator.
Thanks and Regards,
Frank