I am generate 2.048 MGz with jitter ~5ns if FPGA. I need to reduse jitter and vander using the digital filter. Tell me please what tipes of filters will solve this problems.
And next question. I whant generate 19.44 MGz (whith good gitter and vander) from that 2.048 MGz whith use external VCO. I see 2 ways:
1) use digital faze detector, which generate 2 signais : charge and discharge the external capasitor (to operate the VCO). 2) use digital PI regulator, which generate PWM. ANd use external filter.Ho from 2 ways better?