hello, I am so sorry to reply you so late, about the input 4-wire detailed schematic, please refer to the FIgure76 and the Rref is needed.
The EVM user's guide is simplified 4 -wire RTD input diagram.
Other Parts Discussed in Thread: DP83TG720S-Q1 , J721EXENETXPANEVM 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/processors-group/processors/f/processors-forum/1281509/tda4vm-q1-how-to-init-and-control-cpsw9x1-s…