thank you!
two AD8337s seem not to meet my gain request.I need gain range -20db ~ 40db(60db total),but the two AD8337s in serial only have
gain range 0db ~ 48db(48db total).Right?The attachment is the analog part of my design.I want to use ADI chips for all,but I am not familiar with the analog circuit.Could you give me some advice.The another question is does ADI has a PLL with jitter clean and clock distribution functions and 250MHz and 500KHz can be generated when the input is 125MHz.