choodzik
Newbie level 6
hello my problem is ....
i am designing comparator
refernce voltage is 1.2v
the second input of comparator is the output of the charge-pump...
my comparator should react for +/- 5mv changes on 4v output of the charge pump so offset of the comparator should be less then 5mv
(for example if i divide 4.005v on 2 i will have 2.0025 so the offset must be also 2 times smaller )
so the difficulty is how to divide this voltage or how to make it very close to reference voltage ?? it must be done very exacly and would be really good if this circiut will consume just mikroampers...
i am designing comparator
refernce voltage is 1.2v
the second input of comparator is the output of the charge-pump...
my comparator should react for +/- 5mv changes on 4v output of the charge pump so offset of the comparator should be less then 5mv
(for example if i divide 4.005v on 2 i will have 2.0025 so the offset must be also 2 times smaller )
so the difficulty is how to divide this voltage or how to make it very close to reference voltage ?? it must be done very exacly and would be really good if this circiut will consume just mikroampers...
