关于带隙基准的问题(有经验的兄弟指点一下)!

lmy86

不同工艺角的VREF要怎么仿真啊

asdmnbvc

带隙基准基准肯定是要trim的

langtaosha

要用统计模拟和montacalo分析！

rauljin

要作个bandgap trim 电路

moxing

没有经验，努力学习当中！

prof3

1. If you care about absolute value, trimming is a must. No one can do 1% accuracy without trimming in the world.
2. Many many ADC do NOT require absolute accuarcy. That is to say if you get +/-3% without trimming, it will be acceptable.
However, for temp. coef., some applications require as flat as possible for Vref vs temp.  In that case, you need compensate temp. effect only. Let alone the variations for Vref vs P(as long as +/-3%)

shikaicool

这个应该会有影响吧

564190364

回复 1# fuyibin
你好，我也用smic 0.18um调带隙，但是温度系数相差很多，请问怎样调到一样。不胜感激！
   

FZUYJY

跑一下MISMATCH试一下，就是蒙特卡洛

jeffej

在FF角下,Vref=1.17 V.在TT角下,Vref=1.155 V 在SS角下,Vref=1.145 V, it is not bad