My customer is using ADF4153A as the following conditions:
REF_IN: 10MHz / External_VCO: 608MHz / PFD_freq: 5MHz / CH spc.:500KHz
There is no problems in a normal state.
When the customer test the repeated power on-off, ADF4153A is occurred an irregular error that is locked about 4Mhz shift than the desired frequency.
- The error is occurred regardless of the RF frequency.
- If ADF4153A set a high RF frequency It is shifted more.
- The error is cleared only when there is power-on reset of ADF4153
Please tell me the cause and solution of the error.
Thanks in advance.