design a simple comparator using cmos?

[ahgu]

I want a simple cmos comparator with cmos gates.
spec: single supply, VCC=2.5-3.3v
propagation delay under 10ns.
fewer gates as possible.

Any idea?


thanks
Andrew

 

[hung_wai_ming@hotmail.com]

The only solution is a latch based comparator with pre-amp input stage. Most of time, you can get <10ns delay

 

[pfd001]

how about your input amplitude? if it is large, only latch is okay for you

 

[Eojysy]

Check Allen's or Martin's Cmos design book. There is chapter about comparator

 

[jiangnancai]

What's the resolution of your comparator?

I want a simple cmos comparator with cmos gates.
spec: single supply, VCC=2.5-3.3v
propagation delay under 10ns.
fewer gates as possible.

Any idea?


thanks
Andrew