EE 420L
Analog Integrated Circuit Design Laboratory
Laboratory Report 1: Review of basic RC circuits

AUTHOR: Henry Mesa
EMAIL: mesah1@unlv.nevada.edu
01-22-2020

Laboratory Overview:: simulate and verify the simulation results with experimental measurements, the circuits seen in Figs. 1.21, 1.22, and 1.24 (use a 1 µF cap in place of the 1 pF cap) of the book.

Experiment 1: Circuit seen in fig. 1.21 of the book. 

Schematic:

Hand Calculations to Detail Circuit's Operation:

Simulation:

Frequency Response:

Experimental Results:

Comparing Hand Calculations, Simulation, and Experimental Results:

	Hand Calculations	Simulation	Experimental Results
Amplitude	623mV	621mV	504mV
Phase	-51.5˚	-52.1˚	-62.0˚
Time Difference	-715µs	-723µs	-832µs

Comments: This circuit is a simple low-pass filter.

Experiment 2: Circuit seen in fig. 1.22 of the book. 

Schematic:

Hand Calculations to Detail Circuit's Operation:

Simulation:

Frequency Response:

Experimental Results:

Comparing Hand Calculations, Simulation, and Experimental Results:

	Hand Calculations	Simulation	Experimental Results
Amplitude	694mV	703mV	640mV
Phase	-6.84˚	-6.91˚	-8.30˚
Time Difference	-95µs	-96µs	-112µs

Comments: This circuit is very similar to circuit one, the circuit differs by adding a capacitor in parallel with the resistor. This circuit replicates the circuitry inside a compensated scope probe.

Experiment 3: Circuit seen in fig. 1.24 of the book. 

Schematic:

Hand Calculations to Detail Circuit's Operation:

Simulation:

Experimental Results:

Comparing Hand Calculations, Simulation, and Experimental Results:

	Hand Calculations	Simulation	Experimental Results
tdelay	700µs	698µs	924µs
trise	2.2ms	2.3ms	2.56ms
tfall	2.2ms	2.3ms	2.79ms

Comments: Very similar circuit but using a pulse input signal. The duty cycle used for the simulation was 50% with a 10ms period, which is equivalent to a frequency of 100Hz.

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