Dave,
Ton and Toff do not apply in analog use.? Those are saturated switch numbers.
Unlike bipolar MOSFETs do not exhibit FT (Frequency where gain goes to 1)..
They sorta do but the mechanism is different.
For example I've used IRF510s at 70mhz and they are real good at 50mhz.
I see no reason the IRFz24 would be different save for the input C is greater
so the matching is more critical as you go up in frequency.
--
Allison
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