PLL and evaluation selection

Dear Application Engineering:

We are looking for PLL+Evaluation board for prototyping. The requirement is as follow

for PLL:

resolution <1Mhz,  maximum RF input  3GHz

requirement for the evaluation board:

MUST have connector for EXTERNAL VCO, and RF in (beside REF RF IN), although on-board VCO is welcome, offering more options. Prefer integrated TCXO reference on-board and USB connector to PC.

I found EV-ADF4196SD1Z, it allow us to test ext VCO but it doesn't have TCOX on-board. Is there an other options. Many thanks

Thanks a lots

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  • 0
    •  Analog Employees 
    on Feb 3, 2014 11:52 PM

    You could solder the 4 GHz Fractional-N ADF4153 onto the ADF4108 board.

    If you are using an external VCO on the EV-ADF4108EB1Z board, you can disable/bypass the filter op amp (use ADIsimPLL to design your required passive filter), and take the VCO tuning voltage from the VTUNE SMA. Then feedback the VCO output back into the VCO/2 SMA. Remove C29 and set R34 = 50 ohm to stop the on-board VCO loading the feedback, and to create a 50 ohm load, respectively.

    The ADF4196 uses a differential charge pump which is optimized for ultra fast settling times. The loop filter requires about twice as many components as a standard 3 capacitor/2 resistor charge pump.

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  • 0
    •  Analog Employees 
    on Feb 3, 2014 11:52 PM

    You could solder the 4 GHz Fractional-N ADF4153 onto the ADF4108 board.

    If you are using an external VCO on the EV-ADF4108EB1Z board, you can disable/bypass the filter op amp (use ADIsimPLL to design your required passive filter), and take the VCO tuning voltage from the VTUNE SMA. Then feedback the VCO output back into the VCO/2 SMA. Remove C29 and set R34 = 50 ohm to stop the on-board VCO loading the feedback, and to create a 50 ohm load, respectively.

    The ADF4196 uses a differential charge pump which is optimized for ultra fast settling times. The loop filter requires about twice as many components as a standard 3 capacitor/2 resistor charge pump.

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