cables for digital signals

[masudasim1]

Hello all



i am using FPGA board with ADC Ic and i have to provide clock signals (>40 MHz) from FPGA to ADC and digital output signals from ADC to FPGA.



What type of cables should i select for digital clock/data?



How much length of above cable i can use or in other words how far FPGA board can be placed from ADC board without clock distortion?



Please help me



Thanks

 

[Hero999]

Hello all



i am using FPGA board with ADC Ic and i have to provide clock signals (>40 MHz) from FPGA to ADC and digital output signals from ADC to FPGA.



What type of cables should i select for digital clock/data?

It depends on the signals i.e. whether they're single ended, differential and the line drivers/amplifiers used.

How much length of above cable i can use or in other words how far FPGA board can be placed from ADC board without clock distortion?



Please help me



Thanks

If the cable's impedance is matched the distance is limited by the: standing wave ratio, acceptable delay, signal attenuation and noise.