By adding discrete inductors in series with the device, we can œtune out some of the capacitance, and improve the eye opening. If we add enough inductance to peak the 3rd harmonic of 240 MHz, with the capacitance of the device and any added board capacitance, we won t affect the lower frequencies much, and we ll enhance the performance where we need it. If we assume that the MAX4906EF and the added board capacitance amounts to 12 pf, and we d like to peak the response at 500 MHz, then a small amount of series inductance will do just that..