REF Input Frequency Range for RoboClock

Version 1
    Question: What is the REF input frequency range for RoboClock?

     

    Answer:

      If the FB input is connected to an undivided output, the REF input frequency range will be the same as Fnom operation frequency range.

       

                                                                                    
        

          Device

       
        

          REF Input Frequency Range

       
        

          CY7B991/2, CY7B991V

       
        

          15MHz to 80MHz

       
        

          CY7B9911

       
        

          15MHz to 100MHz

       
        

          CY7B9911V

       
        

          15MHz to 110MHz

       

     

      If the FB input is connected to a divided-by-2 output, the REF input frequency range will be the same as Fnom/2.

     

                                                                                    
        

          Device

       
        

          REF input frequency range

       
        

          CY7B991/2, CY7B991V

       
        

          7.5MHz to 40MHz

       
        

          CY7B9911

       
        

          7.5MHz to 50MHz

       
        

          CY7B9911V

       
        

          7.5MHz to 55MHz

       

     

      If the FB input is connected to a divided-by-4 output, the REF input frequency range will be the same as Fnom/4.

     

                                                                                    
        

          Device

       
        

          REF input frequency range

       
        

          CY7B991/2, CY7B991V

       
        

          3.75MHz to 20MHz

       
        

          CY7B9911

       
        

          3.75MHz to 25MHz

       
        

          CY7B9911V

       
        

          3.75MHz to 27.5MHz