I am using AD9552, reference input applied a 40MHz clock signal.
I am using AC coupling, I applied 1V dc bias with resistor divider from 3.3V power supply.
A0-A2 are connected high. Y0-Y5 are open. xtal is connected.
I see 40MHz clock at 1V bias at input when I switch on board.but after I program the chip I do not see the clock chip output.
I check the input it becomes 40MHz with >2.5V DC bias,
can any one help me to figure out what is going on?
I removed the xtal and checked again the problem is not solved.
Thanks in advance