Observing noise in ADF4377 output frequencies

Hi Enash,

Thanks for your reply.

Below capture shows the settings configured in ACE Tool to generate 3.2GHz frequency. Even with this configuration, we are observing noise in the ADF4377 output.

Attached the Register dump as well with the above ACE Tool configuration.

Below table shows the difference between the register settings currently which we are using and the present ACE Tool capture(As per above configuration).

With the register settings Currently Inuse(as shared earlier), we are observing output of 25MHz when Muxout(REG001D) is programmed for either 0x40 or 0x50.

But with the new configuration settings as per ACE Tool, we are observing output of 50MHz when Muxout(REG001D) is programmed for either 0x40 or 0x50.

Attached the Muxout captures for reference.

Please let me know if this is expected behavior for the given settings and also please suggest the best settings to reduce the noise in the output.

Note: Even the regiADF4377_3p2GHz_ACE_Tool_configuration_captures.zipster settings shared earlier are taken from ACE Tool.

Thanks,
Srikanth.

Hi Enash,

Thanks for your reply.

Below capture shows the settings configured in ACE Tool to generate 3.2GHz frequency. Even with this configuration, we are observing noise in the ADF4377 output.

Attached the Register dump as well with the above ACE Tool configuration.

Below table shows the difference between the register settings currently which we are using and the present ACE Tool capture(As per above configuration).

With the register settings Currently Inuse(as shared earlier), we are observing output of 25MHz when Muxout(REG001D) is programmed for either 0x40 or 0x50.

But with the new configuration settings as per ACE Tool, we are observing output of 50MHz when Muxout(REG001D) is programmed for either 0x40 or 0x50.

Attached the Muxout captures for reference.

Please let me know if this is expected behavior for the given settings and also please suggest the best settings to reduce the noise in the output.

Note: Even the regiADF4377_3p2GHz_ACE_Tool_configuration_captures.zipster settings shared earlier are taken from ACE Tool.

Thanks,
Srikanth.