I'm designing the HMC996 into my receiver and would like to know if there is recommended circuitry for driving the gain control Vctrl pin, and be able to vary it digitally ?
Many thanks in advance.
We do not have a recommended circuit for driving the Vctrl pin of the amplifier. Depending on frequency, temperature and Rf power level, the yypical current requirement for Vctrl pin is +0.5mA to -1mA. So a DAC or any driver that is capable of delivering those currents will be applicable.