Hello,
My team needs to put in an order for a frequency synthesizer with ramping/chirping capabilities asap. I've been looking around the web and it seems like TI is the way to go for ramping capabilities at microwave frequencies.
We need a minimum of 3 frequency ranges to ramp over (roughly 2.5 GHz, 6 GHz, 9 GHz). Our ramping duration constraint is pretty relaxed at the moment since no ramping PLL's meet our 1 ns ideal requirement, as that would get into UWB microwave theory as opposed to narrowband.
Facts:
* Used LMX 2492 EVM before. Didn't have much success with it since we had to mock around with the components and decrease the frequency range to less than 1 GHz so we could make measurements with out limited capabilities. Now have access to the required RF equipment to make measurements, but our LMX 2492 board does not seem to work. We have checked the register values, reset them, loaded default settings, traced the voltage waveforms at the tuning voltage pin of the VCO, etc. If you have any suggestions on how to get it to work instead of having to buy another one, it would be very useful.
* HIGHEST PRIORITY: The ability to quickly implement the synthesizer and start testing it with minimal need to change/solder any components. We want to avoid potentially harming it like the last one.
Thank you