Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Generating 400MHz external clock (Cyclone V)

Hello, I'm trying to generate a 400MHz clock signal from my Cyclone V in order to drive the clock input for an external ADC, but I'm getting severe attenuation on the clock signal. Details: ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

I concur with Dave's observation about scope bandwidth. Also, your 15pf looks like about 26 ohms at 400Mhz, a stiff load for an FPGA output.