Precision Op-Amp Tester

Discussion in 'Homework Help' started by Bob Erickson, Mar 12, 2010.

  1. Bob Erickson

    Thread Starter New Member

    Mar 12, 2010
    I need to test an AD8044 Op-Amp and would like to know if there are any testers or applications that can test this device. The tests I would like to perform are,
    1. -3dB small signal bandwidth with gain=1, Vo<0.5vp-p at +/-5V (50MHz)
    2. 0.1dB flatness from 0-12MHz at gain=2, Rl=150ohms at +/-5V
    3. Input offset with Rl=2Kohms to 2.5v,at +/-5v (need to measure <2mV)
    Any ideas? The less expensive the tester, the better.
  2. kdillinger

    Active Member

    Jul 26, 2009
    Cheap way: Use an oscilloscope and a signal generator. 2Vpp sinewave, sweep the frequency, and note the frequency where the output drops by 3dB.
    Expensive way: VNA!

    VNA. Not cheap!

    You can use a DC servo loop.