SNAS324B January 2006 – January 2016 LMX2486
PRODUCTION DATA.
Low noise regulators are generally recommended for the supply pins. It is OK to have one regulator supply the part, although it is best to put individual bypassing as shown in the Layout Guidelines for the best spur performance. If only using one PLL and not both DO NOT DISCONNECT OR GROUND power pins! For instance, the IF PLL supply pins also supply other blocks than just the IF PLL and they must be connected. However, if the IF PLL is disabled, then one can eliminate all bypass capacitors from these pins.