ADF5355 datasheet contains following figure.
Lock time is very huge.
For example, I use PFD = 50 MHz, so:
- Timeout × ALC Timeout > 50 us × 50 MHz
- Timeout × SL Timeout > 20 us × 50 MHz
As a result:
- BCS Div = 21
- Timeout = 500
- ALC Timeout = 5
- SL Timeout = 2
When I use ADIsimPLL I get also 3 ms.
How could ADF5355 lock time be decreased to 100 us like ADF4350 had?
What is a minimum lock time could be achieved when ADF5355 is used?
Thank you in advance.