Analog Integrated Circuit Design Laboratory
Laboratory Report 5: Op-amps III, the op-amp integrator.
EMAIL: mesah1@unlv.nevada.edu
03-05-2020
- The frequency responce of an integrator can be calculated as follows:
- After removing
the 100k resistor, the circuit presented no changes in output behavior as
far as hand calculations or simulation through software. In practice, we
do have to account for offset voltage in the op-amp. Therefore, I found
slight change on the output after removing the 100k resistor.
Simulation without 100k resistor:
Experimental Results: Experimental Results of circuit without 100k resistor:
-
The output had relative similar value than the input. We must assume the 30mV difference are due to resistance and capacitance in wire connections.
- The phase shift did represented a 90 degree difference between input and output as expected from hand calculation and simulation through software.
Hand Calculations to Detail Circuit's Operation:
Simulation:
Experimental Results:
-
The trade-off in resistor and capacitor values happened to be reciprocal to each other. The bigger the resistor value the smaller the capacitor has to be or vice versa, to be able to achieve a triangle wave output providing a pulse input.