请问一下三端电阻的sub端改接什么电位

wuhanhan8

大家好，请问一下三端电阻的sub端该接AVDD还是AVSS有区别吗？我看前仿好像都一样，求指导，谢谢！

acging

啥类型电阻？
poly的话是没区别的。

camelotking

It should be "B" not "sub".
For poly resistor, both VDDA or VSSA are OK. There is a parasitic cap to "B". So if signal cross the resistor is referring to VDDA, you should connect "B" to VDDA. The same apply to VSSA

wuhanhan8

   

camelotking 发表于 2021-8-2 13:04
It should be "B" not "sub".
For poly resistor, both VDDA or VSSA are OK. There is a parasitic cap t ...

感谢！

jzr1989

看情况，如果这个电阻上的电压对sub很高，就会把电阻放在阱里，阱电位可以电阻电压比较高的一端。