PreLab 3: Operational Amplifiers – Part I, Study notes of Electrical and Electronics Engineering

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Lab 5: Operational Amplifiers - Part III

ECEN-325-

Alex Ramponi

February 24th, 2019

Calculations:

Schematics: Figure 1: Circuit schematic for the Lossy Integrator Figure 2: Circuit schematic for the Pseudo Differentiator

Figure 3: Circuit schematic for the Finite GBW Limitations Figure 4: Circuit Schematic for the Slew Rate Limitations

Figure 7: Lossy Integrator transient plot with square wave input Peak to peak voltage for output: 1.305 V Figure 8: Pseudo Differentiator bode plot Low Frequency gain: -46.8177 dB 3 dB frequency: 4.5 kHz Gain at 1000 Hz: 13.0345 dB Phase at 1000 Hz: -90 degrees

Figure 9: Pseudo Differentiator transient plot with sin input Input magnitude: 0.1 V Output magnitude: 0.45 V Phase: -98.9491 degrees Figure 10: Pseudo Differentiator transient plot with triangle input Peak to peak voltage for output: 0.580 V

Figure 12: Slew Rate Limitations bode plot Low frequency gain: 0 dB 3 dB gain: 1.5613 MHz 75 kHz gain: 2.9734 mdB 150 kHz gain: 12.1463 mdB Figure 13: Slew Rate Limitations transient graph for 1sin(2pi*75000)

Figure 14: Fourier simulation for 1sin(2pi75000) with THD= 0.939528 % Figure 15: Slew Rate Limitations transient graph for 2sin(2pi75000)

Figure 18: Fourier simulation for 1sin(2pi*150000) with THD=11.326% Measurements: Figure 19: Lossy Integrator Bode plot Low-frequency gain: 10.4 dB 3-dB frequency: 146.21 Hz Magnitude at 1 kHz: 2.6909 dB Phase at 1 kHz: 92.701 degrees

Figure 20: Lossy Integrator time-domain waveform for input=0.5sin(2pi1000t) Input amplitude: 0.500 V Output amplitude: 0.37305 V Phase Difference: 91.2204 degrees Figure 21: Lossy Integrator time-domain waveform for square input with V=0.5 V, f=1 kHz Peak to peak for output: 1.2416 V

Figure 24: Pseudo Differentiator time-domain waveform for input=0.1sin(2pi1000t) Input amplitude: 0.100 V Output amplitude: 0.43578 V Phase Difference: -99.7056 degrees Figure 25: Pseudo Differentiator time-domain waveform for triangle input with V=0.1 V, f=100 Hz Peak to peak for output: 0.58827 V

Figure 26: Finite GBW Limitations for R2=22k Low frequency gain: 27.16 dB 3 dB gain frequency: 29.061 kHz Figure 27: Finite GBW Limitations for R2=56k Low frequency gain: 35.18 dB 3 dB gain frequency: 11.392 kHz