Divider-by-3 duty cycle

Hello,

I need to use a divider-by-3 device in my product.

It requires to output a signal with 50% D.C.

 Input is a 25-100MHz SE signal.

Output is a divided-by-3 differential signal.

 Can you confirm the following:

  1. HMC794LP3E
    Datasheet states “Duty Cycle for Differential Mode, +5 dBm Input Power: 50 ±3 %”.
    I need this confirmed specifically for a divided-by-3 setting, SE in, DIFF out.
  2. ADF4150 MUXOUT pin:
    Can the device produce a divided-by-3 signal on its MUXOUT pin with 50% D.C? (using the 10-BIT R COUNTER)

Thank you

Gil

Parents
  • +1
    •  Analog Employees 
    on Dec 10, 2019 11:46 PM

    Hi Gil,

    The /3 of the HMC794 does produce a 50% output.    However, it looks like your 25M-100M input frequency is below the HMC794's min input frequency

    R Counter outputs are typically not 50%. 

    You can also look at the LTC6954.  This device has a /3, excellent ESD protection and the web price is lower than the HMC794 (as of 12/10/19).

Reply
  • +1
    •  Analog Employees 
    on Dec 10, 2019 11:46 PM

    Hi Gil,

    The /3 of the HMC794 does produce a 50% output.    However, it looks like your 25M-100M input frequency is below the HMC794's min input frequency

    R Counter outputs are typically not 50%. 

    You can also look at the LTC6954.  This device has a /3, excellent ESD protection and the web price is lower than the HMC794 (as of 12/10/19).

Children