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Unformatted text preview: Report 10: Diﬀerential Ampliﬁers
Name: Lab Section: 3.2.2 Measure IC 1 , IC 2 , IC 3 , and VOUT,DC . How do they compare with your hand calculations? IC 1 = IC 2 = IC 3 = VOUT,DC = 3.2.3 Sketch the waveforms at vin+ and vout+ . 3.2.4 Measure the peak-to-peak voltages of vin+ and vout+ . vin+,p−p = vout+,p−p = 3.2.5 Qualitatively describe vout+ and vout− (i.e their similarities and diﬀerences). Is this result agreeable? 3.2.6 Measure the peak-to-peak voltage of vout+ − vout− and calculate the diﬀerential gain of the circuit. Does this match the gain you calculated in the prelab? 1 2 vout,p−p = ADM = 3.2.7 What do you see at the output? Why? 3.2.8 Measure the gain. Does it match your prelab calculations? Does it match your result from 3.2.6? ADM = 3.3.2 Sketch the output waveform. Why is it not sinusoidal? 3.3.4 Calculate the diﬀerential gain of the ampliﬁer with the added load resistor. ADM = 3.3.5 Sketch vout . What is the measured diﬀerential gain of the circuit? How does it compare with your hand calculations? Does it match the gain you observed in step 3.2.6? Should they match? ADM = 3 3.4.1 Attach your netlist to this report. 3.4.2 Use SPICE to ﬁnd IC 1 , IC 2 , IC 3 , and Vout,DC . Compare these values with your prelab calculations and lab measurements. IC 1 = IC 2 = IC 3 = VOUT,DC = 3.4.3 Attach your plot to this report. What is the gain according to the plot? Does it match your hand calculations? Does it match your labs measurements? ADM = ...
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- Spring '08