4.3. F-Tile Rail Board Connection and LC Filter Recommendation under Noisy Voltage Regulator
The LC filter recommendation in this chapter is not required for the F-Tile power rails if you meet the voltage regulator (VR) ripple requirement in Table 20. Intel® recommends using the LTC7151S voltage regulator to meet very tight noise specifications for VCCERT1_FHT_GXF and VCCERT2_FHT_GXF. You can use any other voltage regulators for the F-Tile power rails as long as you meet the voltage regulator ripple specifications by selecting a proper voltage regulator. If you do not meet the VR ripple specification in Table 20 by using a noisy voltage regulator, Intel® recommends using the LC filters in this chapter to block the high noise. Implement one set of LC filters for each tile on the FPGA.
|Power Rail||Maximum Ripple (mVp-p)|