HMC996LP4E Vctrl

Hi EngineerZone

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.

  • Hi,

    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.