When AD9508 is working in PIN strapping MODE, four souput DIV ratio is 1/2/4/8 and the sync signal is floating, if the four output phase be automatically edge aligned or not?

When AD9508 is working in PIN strapping MODE, four souput DIV ratio is 1/2/4/8 and the sync signal is floating, if the four output phase be automatically edge aligned or not? 

Thanks!

Parents
  • 0
    •  Analog Employees 
    on May 10, 2021 6:09 PM

    Hi,

    the SYNC pin has an internal 24kohm pull up resistor (see the pin description table in the data sheet). 

    Then, at page 25, the data sheet states there is no need to synchronize after power up unless a change in divider value of phase offset value is desired. So if you use the pin strapping approach, the outputs are synchronized automatically, by which I mean the outputs are automatically edge alinged.

    Petre

Reply
  • 0
    •  Analog Employees 
    on May 10, 2021 6:09 PM

    Hi,

    the SYNC pin has an internal 24kohm pull up resistor (see the pin description table in the data sheet). 

    Then, at page 25, the data sheet states there is no need to synchronize after power up unless a change in divider value of phase offset value is desired. So if you use the pin strapping approach, the outputs are synchronized automatically, by which I mean the outputs are automatically edge alinged.

    Petre

Children
No Data