Hi Analog Device Team,
We are going to use AD9258 to design a receiver for measurement device for frequency range from 100kHz to 30 MHz. According to the S parameter sheet of AD9258, the equivalent parallel resistor has negative value when input frequency is below 300kHz. I have no idea what effect this negative resistor will bring, oscillation? Could you kindly indicate me how to handle the input matching resistor network if there exist a negative resistor effect?