ADC12J4000EVM GUI for 4GHz operation

Toshi, you can install the GUI on the eval board page you linked. Since the on board clock goes up to 3.76 GHz, you will need to provide an external clock as described in the user's guide:

By default, the ADC12J4000EVM has an onboard clocking solution. A few small board modifications
enable external clocking. If external clocking is used, the following equipment is recommended.
• Two low-noise signal generators. TI recommends similar models to the an analog input source.
• Two bandpass filters for clock inputs. TI recommends filters similar to the analog-input path filter.

NOTE: For frequencies at 3100 MHz and below, the two clock sources must be set to the same
value. For frequencies above 3100 MHz, the clock source that is used to drive the
LMK04828 (labeled LMKCLK) must be half of the frequency used to drive the ADC12J4000
sampling clock (labeled DEVCLK)
SLAU551A–

Hi! Pikafu-san,
Thanks for your response.

According to the post of below URL, the new version of ADC12J4000 which supports 4Gsps
is developing.

e2e.ti.com/.../389404

Thanks and regards,
Toshi