design a simple comparator using cmos?

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ahgu

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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
 

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

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

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

What's the resolution of your comparator?

ahgu said:
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
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