40ns response time comparator design

[gonewind]

hi ,every one
now i have to design a comparator with 5mv offset and 40ns response time.what i want to ask to you is how i can measure the response time and offset with hspice.
as far as i know,the comparator's response have two ways that is linear and slew depending on the difference of input. the offset is caused by mismatch of mos.can i
simulate it with .dc analysis.
and can you who have experience in designing comparator give me some int?
or introduce me some books about designing comparators.
best wishes.

 

[vbhupendra]

You can refer to Allen's book. It is good for comparator design. Then for practical implementation Gregorian.