I'm trying to convert a 120MHZ 1V p-p ac coupled sinewave to a LVTTL (3.3V) format for use as a 120MHz clock signal to an FPGA.
- PECL Comparator - I'm trying to avoid using PECL Comparators, because I would have to convert the PECL output to a LVTTL swing, which just brings me back around to the original problem.
- "normal" comparators - I've looked through Linear Tech and other places, and the max spec is 100MHz. Do you know of any LVTTL comparators with specs closer to 120MHZ??????????
- Transistor. There are many high frequency RF transistor with excellent small signal gains around their bias points but lousy large signal - DO you know of any discrete transistors that will switch fully at 120MHz rates?? Thanks