Hello,
I would like to confirm for AD9744-FMC-EBZ-J3 EXT REF/DAC CLK.
The AD9744-FMC-EBZ's onboard clock has a minimum speed of 40 MHz, but we received an inquiry from the customer about using an external clock input to operate at low frequencies of around 100 kHz to 500 kHz.
Could you please your opinion the below ?
-What is the supported frequency range for the external clock input?
(Not mentioned in the datasheet.)
-I would appreciate some advice on using it at frequencies between 100 kHz and 500 kHz.
The external clock input is equipped with an RF transformer (TMC2-43X+), so it is unlikely that frequencies below 10 MHz can be input. So, I think that modifications such as removing the RF transformer will be necessary. Are there any other functional issues?
Even if a clock compatible with the electrical characteristics of the AD9744 and the Spartan 6 on the SDP-H1 are input, I am concerned that there may be frequency limitations due to the SDP-H1, ACE software, DPG Lite software, or other design tools, which is why I would be confirmed this question.