circuit function identification

Discussion in 'General Electronics Chat' started by donut, May 23, 2012.

  1. donut

    Thread Starter Member

    May 23, 2012
    Please some one help me understand how this circuit operates. My knowledge is very thin.

    1) Why does this LNA have two sources of power? Pin 1 and Pin 5?

    2) What is the 1 K resistor doing?

    3) what is the 10 nH inductor doing?

    4) what is the 5.6nH inductor doing?

    5) the 1k and the 10nH are in parallel correct?

    6) Could I combine the 10 nH and 5.6 nH to get a equivalent inductor circuit. If so would it go in series or parallel with the resistor.