I have a system with op. amp. -based comparator (AD8051; 5V single supply; 2.5V reference 1.2V wide hysteresis loop made of 1k and 4k resistors). The thing oscillates every once in a while (100+MHz) when input signal approaches "switching point". I am not suspecting the layout. :o( Here is the question. Aside from the built-in hysteresis, what do comparators (e.g. LMV7239) have that op-amps (e.g.: AD8051) do not?
Yes, I understand that there are tons of OA topologies. There are probably quite a few comparator topologies too.................... :o? Thanks Michael
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