I am trying to interface AD9954 with arduino due. When I connect the voltage supplies to AVDD, DVDD and DVDD_I/O I current rating I get is 37mA, 0A and 0A respectively. However when I turn-on the reference clock to pin 8 and 9 through a balun (REF_CLK) the current rating becomes 50mA, 0A and 1mA respectively. Are these correct values? Thankyou.