LMX2595EVM: Ramping function

Hello Callum,

The ramp function is described in section "7.3.14 Ramping Function" of the LMX2595 datasheet.

Additionally "Appendix F" of the LMX2595EVM User's Guide has an example for setting up ramp. (https://www.ti.com/lit/ug/snau219b/snau219b.pdf)

What are you step sizes?

A ramp across such a large range may not be possible as the channel divider on the output will need to be changed. For example if you have a channel divider of 2, then you can ramp across VCO frequencies 7500 MHz to 10000 MHz to give you output frequencies 3750 MHz-5000 MHz. As this is across VCOs and the range is large you will also need to calibrate your VCO every 30-40 MHz.

Now if you set your channel divider to 4, and ramp from 7500 MHz to 15000 MHz you will get frequencies 1875 MHz - 3750 MHz.

Thanks,

Vibhu