1. Review formulas
1pole RC highpass filter:
1pole RC lowpass filter:
If you make the following assumptions:

The openloop gain A_{v0} is large enough, which means \(\gg \left(1 + \frac{R_f}{R_1}\right)\)

The opamp’s openloop output impedance Z_{out} is low enough, or much less than the impedance seen by the output node (for this lab = 50,047 Ω).
The total noninverting opamp output from the input signal and DC errors V_{OS} and (I_{B}, I_{OS}) ←→ (I_{B+}, I_{B}) is:

\(R_{eq+}\) and \(R_{eq}\) are the impedances seen by the + and  input terminals of the opamp.
2. Procedure
Construct your Lab 5 opamp of Discrete opamp schematic. Then use this as a normal “triangle” opamp and construct the circuit of Variable gain noninverting amplifier. Instrument this circuit with your AD2 with the connections shown.
Open WaveForms and startup the Wavegen and Scope panels.
Setup the system so the amplifier output is a 1 V_{pp}, 1 kHz sinusoid centered around 0 V and is operating at a gain of 100 V/V (adjust the potentiometer).
Make note of the W1
input amplitude.
Verify that the amplifier is operating correctly with a clean output waveform centered near 0 V.
Open the Network panel in WaveForms and set it up with the following parameters:

Upper row settings

Scale: Logarithmic

Start: 100 Hz

Stop: 10 MHz

Samples: 100


Right side settings

WaveGen: set to the same offset and amplitude as the current WaveGen values

Magnitude

Units: dB

Top: 70 dB

Bottom: 0 dB


Phase

Offset: 90°

Range: 180°


☆ This setup plots the magnitude and phase of your amplifier’s transfer function!
Verify that the low frequency gain is still 100 V/V, remember the conversions between dB and linear voltage units:

\(\text{gain (dB)} = 10 \log_{10} \Big\lbrack(\text{V/V})^2\Big\rbrack\)

\(\text{gain (V/V)} = \sqrt{10^{\text{(dB)}/10}}\)
or, simplified to the perhaps more familiar form:

\(\text{gain (dB)} = 20 \log_{10} \Big\lbrack\text{(V/V)}\Big\rbrack\)

\(\text{gain (V/V)} = 10^{\text{dB}/20}\)
The frequency response plot is only valid when the system is linear, meaning the input and output signals are all within proper ranges to not clip or otherwise be distorted. One nice way to check this is to turn on the oscilloscope view at the same time. Do this by selecting menu item  .
Vary the potentiometer to set your amplifier to several lowfrequency gains and measure your amplifier’s 3 dB frequency. Also compute the gainbandwidth product at each setting (GBW is computed with gain in linear units, not dB).
Gain (dB)  f_{H} (3 dB)  GBW (MHz) 

0 

10 

20 

30 

40 

50 

60 
 Notice the following characteristics of these measurements


When lowfrequency gain increases, the bandwidth decreases by the same proportion.

GBW is relatively constant.

GBW is nearly the same as the unity gain (1 V/V, 0 dB) frequency, f_{T}.

The phase is 45° at the 3 dB frequency, exactly as predicted by the transfer function math.

3. Old Lab 5 notes for reference
Construct the opamp of Discrete opamp schematic on a small section of breadboard.
The capacitor Cc
helps to stabilize this amplifier, but you can greatly help the situation by minimizing the length of jumper wires in the construction.

Be sure to allow yourself easy access for replacing capacitor
Cc
and for attaching meters to nodesina
,inb
, andout
. 
Use the physically small ceramic capacitor types for
Cc
. 
Add a large capacitor (1 to 10 μF) between the
Vcc
andVee
nodes to help reduce the effect of the long wires connecting to the power supply. 
For each of the 3 npn transistors: use the “diode check” mode on the multimeters to measure V_{BE}. Select the transistors with the closest values as
Q1
andQ2
. Since V_{BE} is sensitive to temperature changes, it is best to minimize touching the transistors until you’ve measured them (use pliers). 
Do a similar procedure to select your
Q3
andQ4
pair.
See Compact construction example for an example of prebending transistor leads and building the circuit in the same general arrangement as the schematic. This makes troubleshooting easier since the geometry is similar and reduces the parasitic inductances and the electric and magnetic coupling between nodes and loops.
resistor
Several of the resistors are bent to be in a vertical position.
Bend and trim your resistor leads as shown in Vertical
resistor.
The right lead in the figure makes for a convenient loop for attaching probes.
4. References

[341notes] D. White, ECE 341 Class notes 2018 folder, https://drive.google.com/folderview?id=1hUN1Xicpr9tpCsL2937jfNaCxgpyLT3L

[341docs] D. White, ECE 341 reference documents folder, https://drive.google.com/folderview?id=0B5O5cSaA0tEQYVpaSnJxMGFrdHM

[AoE] P. Horowitz and W. Hill, The Art of Electronics, 3rd ed. Cambridge University Press, 2015. https://artofelectronics.net

[LAoE] T. Hayes, Learning the Art of Electronics: A HandsOn Lab Course, Cambridge University Press, 2016. https://learningtheartofelectronics.com

[LEC] Tony R. Kuphaldt, Lessons in Electric Circuits, Source version: https://www.ibiblio.org/kuphaldt/electricCircuits/, All About Circuits version: https://www.allaboutcircuits.com/textbook/

[CLbook] Michael F. Robbins, CircuitLab, Ultimate Electronics: Practical Circuit Design and Analysis, https://www.circuitlab.com/textbook/

[TCA] Alfred D. Gronner, Transistor Circuit Analysis, Simon & Schuster, 1970, https://archive.org/details/TransistorCircuitAnalysis

[] Neil Weste and David Harris, CMOS VLSI Design  A Circuit and Systems Perspective, 4th edition. AddisonWesley, 2011. http://pages.hmc.edu/harris/cmosvlsi/4e/index.html

[Guidebook] D. White, Guidebook for Electronics II. https://agnd.net/valpo/341/guidebook

[] H.K. Gummel, H.C. Poon, An Integral Charge Control Model of Bipolar Transistors. Bell System Technical Journal, 49: 5. MayJune 1970 pp 827852. https://archive.org/details/bstj495827

[ROHM] ROHM Semiconductor, Electronics Basics, http://www.rohm.com/web/global/en_index

[vishayeseries] Vishay, Standard Series Values in a Decade for Resistances and Capacitances, https://www.vishay.com/docs/28372/eseries.pdf