I'm trying to do a question that requires me to design an inverting op-amp in multisim and find the slew rates in different scenarios using the OPAMP_5T_VIRTUAL operational amplifier model found in the multisim component library, and view the output on the oscilloscope.
The input to the op-amp is from a signal generator :
Triangular wave amplitude: 500mV
Triangular wave frequency: 11 kHz
The op-amp should have a gain of 6.
the first part was to calculate the minimum slew rate, the virtual op amp values were not changed and the default slew rate is already set to 1M V/us.
so i simulated the circuit and the output was :
i placed the cursors in the linear region of the waveform in the oscilloscope to measure minimum slew rate : SR=∆2.395V/(∆36.290µs)=0.066 V/µs (is this value for minimum slew rate correct?)
In the next part of the question i have to simulate the circuit twice of the minimum slew rate and one fifth of the slew rate and the output waveforms should be on the same oscilliscope:
twice the minimum slew rate = 0.066 X 2 = 0.132
one fifth slew rate = 0.0132
The red wave(channel A) output is from the op-amp with slew rate of twice the minimum slew rate and the blue wave(channel B) output is from the opamp of one-fifth of the minimum slew rate. Is this simulation output correct?
also, what can i say to discuss the differences between simulation results that indicate slew rate distortion is taking place.
If anything is unclear and not understandable I apologize. Thanks