Other Parts Discussed in Thread: LMX2492
Hi,
Arrian here. I have some noob questions as I'm still an EE student.
I recently soldered a secondary, lower frequency VCO onto the board and at the moment I'm trying to figure out how to replace the old connections such that the new VCO becomes the main one.
Q1) The next steps are to solder R5 onto the board to connect RFout of the new VCO to the RFout of the board. So first of all, is there anything I should keep in mind when soldering a new VCO and re-routing some of its connections on this specific board (LMX2492EVM) ?
Q2) In sections on the physical board, such as "TP_VccPLL" should I be making some sort of connection from the Vcc of the PLL to that point, or have the engineers at TI already taken care of the power provided to each node, at the second or third layer of the PCB?
I'm also looking at the schematics and wondering what the function of some of these peripheral sections are:
Q3) Looking at Figure 1, and also the physical board, I see a small chip attached in the V6 section. What is its purpose? And as mentioned in the previous question, should I be providing the VccPLL power or is it already taken care of at a layer beneath the PCB?
Q4) Looking at Figure 2, is the clock signal provided here or do I need to re-route anything to the clock near the secondary VCO section?
Thank you.
Figure 1.
Figure 2.
