Compartor with precise VIH and VIL

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GDF

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Hi all, I would like to design a precise comparator with precise hysteresis.
But I know the hystersis of a schmit trigger variates with supply voltage
variation. So what's the idea if I need a comparator used to compare a precise
VIH and VIL with hystersis function. The voltage difference between VIH and VIL
is 150mV.

Any suggestion?
Thanks,
 

cmos analog circuit design
allen
P467-471
 

Prof. Allen introduces two different types of comparator, internal and external
positive feedback. But both will variate with process or supply variation.
 

refer to this
**broken link removed**
 

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