At first, thank you for all responses. It's superb how many people are willing to help, but going back to topic...
With those requirements, it might be easier to build a discrete amplifier/clipper.
I'm trying to avoid such a solution for now, but if I'll have to I'll probably will test it, if it necessary.
PL133-37 at 2.5V seems to meet those specs
Something like that IC would be nice, however I can't see input high/low voltage levels at datasheet, but anyway that may be IC to take into consideration to test.
signal -> DC blocking cap -> resistor divider to bias the signal to remain positive -> schmitt trigger/transistor amplifier/fast comparator -> regular, sharp edged digital clock signal
That's exactly solution I'm trying to implement, issue is to have low power amplifier with such a bandwith.
For this purpose I quite like the Linear Tech LTC6957, although it (the CMOS output version at least) uses ~20x more power than you want.
Unfortunately, I can't afford to use so much current for one IC.
![Sad :(](https://www.eevblog.com/forum/Smileys/default/sad.gif)
Relevant thread: https://www.eevblog.com/forum/projects/level-translate-the-output-of-a-tcxo-crystal-oscillator-module/
I think about trying transistor-based amplifier, it may be suitable for that application.
I assume this is a sine centered around zero? Well if it's just a sine, you already have your clock, you just have to make it usable by digital circuits, so:
signal -> DC blocking cap -> resistor divider to bias the signal to remain positive -> schmitt trigger/transistor amplifier/fast comparator -> regular, sharp edged digital clock signal
Yes, a couple of logic gates with feedback resistors will do that.
![](https://www.eevblog.com/forum/projects/comparator-for-restoring-27mhz-clock-from-sine-signal/?action=dlattach;attach=652731;image)
How about low input amplitude? I believe all logic gates like that have built in hysteresis loop, so I believe it won't be able to switch.
How much jitter and hysteresis can you tolerate? Do you care about the phase shift?
Hysteresis at input? I'd like to keep it low because of low peak-to-peak input voltage. Phase shift is not an issue. Do you mean jitter at input? If so, I think it can be not taken under consideration for now.