current flow in breakout eval parts

Discussion in 'Electronics Resources' started by schroedercn, Jun 7, 2013.

  1. schroedercn

    Thread Starter New Member

    Jun 6, 2013

    I'm doing some abstract simulations with PSpice Student 9.1 from former OrCAD including a GAIN block (from the abm lib) and an E block (from the analog lib). I was expecting these blocks to have high impedance inputs, but I get current flow on the input pins even at the GAIN block in the order of the voltage on these pins. Does anybody know why or how I can get high impedance inputs (different model blocks or changing parameters etc.) respectively?