Timeline for N-counter issue ADF4001
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| May 31, 2023 at 2:00 | comment | added | rfdave | break the loop at the loop filter, apply ~ 1.5V at the VCO tune port, and see if you get a ÷N signal at the output. That gives you a "known signal" at the RF input port, and you should see a mux out at the appropriate frequency. I've played with an AFD4002, and that pulse is very, very short, so get your oscope triggered on the ÷R signal, which is wider, then switch to ÷N and see if you see that signal. | |
| May 26, 2023 at 6:04 | comment | added | Chris | Thanks. With the N divider being death I mean there is no signal, just 0Vdc. It should work fine with a Vtune voltage lower than 3.3V right. I should still see a signal, only with lower frequency than with Vtune is 5V. I can play around a bit more with the registers, but it used to work when I was using 5V vcc. | |
| May 26, 2023 at 0:51 | history | answered | rfdave | CC BY-SA 4.0 |