What this buffer does for your clock tree
The ADCLK946BCPZ-REEL7 is a 1:6 fanout buffer built on Analog Devices' SiGe process, accepting CML, CMOS, LVDS, or LVPECL inputs and delivering LVPECL outputs at up to 4.8 GHz. The 4.8 GHz ceiling covers clock rates for high-speed ADCs, DACs, and SERDES interfaces. The 1:6 ratio lets a single clean clock source feed six converter channels or FPGA transceiver banks without adding a second buffer stage.
Signal-standard compatibility and supply rail
Input flexibility covers CML, CMOS, LVDS, and LVPECL — you can feed it from a crystal oscillator, an FPGA output, or another clock buffer without level-shifting. Outputs are LVPECL only, so the downstream load must accept that swing; if your ADC or FPGA expects LVDS, you will need AC-coupling and termination resistors. Supply range is 2.97V to 3.63V — a narrow 3.3V ±10% window. The board's LDO must keep ripple below a few millivolts at 4.8 GHz to avoid jitter injection.