P11.7. Determination of the Opamp Frequency Response
Procedure
The VI sweeps the input sine-wave signal over a range of frequencies, 1Hz<f<1kHz. The gain is computed and plotted and the bandwidth of the amplifier is computed and indicated. The GBP is then computed and indicated.
Install precision resistor values for R3 and R4 in the Front Panel of FreqResp.vi. Run the VI to obtain the frequency response. Verify that Vo(max) is less than about 1 V. This must less than the oscilloscope limit of 2 V. Save the Front Panel.
Datasheet Gain – Bandwidth Product
Symbol
Parameter
Min.
Typ.
Max.
Unit
GBP
Gain – Bandwidth product (Av = 40 dB, RL = 100 kΩ, CL = 100 pF, fin = 100 kHz)