04/18/23

Exercise 1Exercise 1Op amp has an open loop gain of 2x105,input resistance

of 2MΩ and output resistance of 50ohm. Find the

closed-loop gain (dB) and determine current i when

Vs=2V (Prepared by: NOR SYUHADA BINTI

ZAINUDIN_G.1).

Exercise 2Exercise 2Determine the output voltage of an op-amp for input voltages

of Vi1 = 250 μV , Vi2 = 240 μV. The amplifier has a differential

gain of Ad = 4000 and the value of CMRR is :

a) 250

b) 10M

(Prepared by: ZURINA ABDUL HALIM_G.2)

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Find the output voltage of the operational amplifier with the help of the diagram below .Given β is 200,ri=250Ω if op-amp is in the opposite polarity input.(Prepared by: insyirah bt muhamad hamdan_G.1)

Exercise 3Exercise 3

+VCC =+14V

RC =5kΩ

Vi1 =6VVo

-VEE=-14V

RE=6kΩ

Q1Q2

RC =5kΩ

VE

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Find the output voltage in figure below,where V1=1V, V2=0.5V, V3=0.2V, R1=R2=R3=Rf=10kΩ (Prepared by: LAI YOONG YEE_G.4)

Exercise 4Exercise 4

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Exercise 6Exercise 6

i

C

d

od r

R

V

VA

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(a)Determine the type of the circuit in figure 1.(b)Draw the AC equivalent circuit of the circuit in figure 1.(c)Prove that differential voltage gain, Ad is given by the expression below:

Where Vd = Vi1 – Vi2 and Vo = Vo1 = Vo2.

(d) Calculate the output voltage if given Vi1=5V,Vi2=4V, B=150 and ri=15kΩ, RC=5kΩ, RE=3kΩ.(Prepared by: Syamimi binti Mokhtar_G.3)

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Exercise 7Exercise 7

Following the circuit calculate the voltage output 1 ( Vo1) and voltage output 2 (Vo2).(Prepared by: WAN KHAIRULNAIM B WAN HARON_G.5)

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Exercise 8Exercise 8The output voltage of a certain op-amp appears as shown in figure below in response to a step input. Determine the slew rate (Prepared by: LY GOH_G.2).

0.75µs-8

Vout (V)

+8

t0

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9.1. For a given value of open-loop differential gain, does a higher common-mode gain result in a higher or lower CMRR? Explain. (Prepared by: NOR SYUHADA BINTI ZAINUDIN_G.1).

Exercise 9Exercise 9

9.2. What was the characteristic for the inverting amplifier? (Prepared by: ZURINA ABDUL HALIM_G.2)

9.3. Give the modes of input signal: (Prepared by: insyirah bt muhamad hamdan_G.1)

9.4. Briefly explain about inverting amplifier (Prepared by: LAI YOONG YEE_G.4).

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9.5. If the input signal not match for the circuit in figure 1,does it function properly? Why? (Prepared by: Syamimi binti Mokhtar_G.3)

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Exercise 10Exercise 10

Theory:Theory:A typical op-amp is made up of three types of amplifier

circuits. Name the three types of the stage and draw the diagram.

Calculation:Calculation: Refer to Figure where V1 = 5V, R1 = 100 kΩ, Rf = 500 kΩ and AC = 0.001, calculate:

(a) output voltage, Vo(b) common mode rejection ratio, CMRR(c) output voltage if the connection is converted to non-inverting amplifier

(Prepared by: Hasrimie b Abdul Hamid_G.10)

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Exercise 11Exercise 11

Theory:Theory:Define: (a) Differential Input and (b) Common Input.

Calculation:Calculation:

If known that +Vcc = +15V Rc = 10kΩ, Vi1 = 2V, -VEE= -15V, RE = 8kΩ and Vi2 = 0V, find the output voltage Vo1.

(Prepared by: Mohamad Aizat_G.10)

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Exercise 12Exercise 12

Theory:Theory:State 3 differences between Ideal Op-Amp and

Practical Op-Amp?

Calculation:Calculation: Find the values of the input and output impedances in figure 1.Also,determine the closed-loop voltage gain. The op-amp has the following parameters: Aol = 50 000;Zin = 4 M Ohm, Zout = 50 Ohm.

(Prepared by: Siti Haslinda bt Zainall Abidin _G.8)

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Exercise 13Exercise 13

Theory:Theory:List the amplifier class in a typical op-amp?

Calculation:Calculation: Calculate the output voltage of a non-inverting amplifier as figure below, for values of V1 = 2 V, Rf = 500 kΩ and R1 = 100 kΩ.

(Prepared by: Bong Soon Wai_G.8)

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Exercise 14Exercise 14

Theory:Theory:Define common-mode rejection?

Calculation:Calculation: Given the op-amp configuration in figure 1, determine the value of required to produce a closed-loop of voltage gain of 12.

(Prepared by: Lee Kar Leong _G.8)

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Exercise 15Exercise 15

Theory:Theory:Briefly explain about the operation of differential mode?

Calculation:Calculation:

Refer to Figure, determine the approximate values for each of the following quantities: Iin, If, Vout and closed loop gain if given R1=2.2 KΩ ,Rf=22 KΩ, and Vin=1V

(Prepared by: Kalidhass A/L Vengdasalam_G.6)

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Exercise 16Exercise 16

Theory:Theory:Why DC power supply is used in operational amplifier circuits?

Calculation:Calculation:

+_

+

_

VoVs

10K

20K

7411

i

5102x

An ideal op amp is shown in Figure. Op amp has an open loop gain of 2 x 105, input resistance of 2 MΩ and output resistance of 50 Ω.(a) Draw the equivalent circuit of circuit in Figure 1(b) Find the closed-loop gain (dB)(c) Determine current i when Vs = 2 V

(Prepared by Sarveshvaran A/L Suppiah_G.6)

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Exercise 17Exercise 17

Theory:Theory:There a three operations can be done in a differential amplifier circuits : i) DC Bias ii) AC Operation

Calculation:Calculation:

Given: VCC = +9V, VEE = -9V, RC = 3.9 kΩ and RE = 3.3 kΩ. Calculate

the DC voltages.

(Prepared by Syamsuri B Hamzah_G.5)

Describe iii) Common Mode Operationabout AC Operation and Common Mode Operation and draw the figure of each amplifier circuit.

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Exercise 18Exercise 18

Theory:Theory:State the reason why the additional resistor (Rf) are used in a practical integrator.

Calculation:Calculation:

This Figure shows a Summing Amplifier with the following data:V1= 8v, R1= 650KΩV2= -4v, R2= 480KΩV3= 2v, R3= 700KΩ

Rf = 1.5MΩCalculate the output voltage (Vo) of the amplifier.

(Prepared by: MOHD AZRUL BIN AHMAD _G.5)

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The names listed below are the lucky studentslucky students

because having a chance to finish the prepared

questions:

1. Syamsul Arif_G.10 (Exc. 10)

2. Zulfahmi_G.10 (Exc. 11)

3. Majidah bt Mohd Zani Piyas_G.8 (Exc. 12)

4. Jason Wu Chee San_G.8 (Exc. 13)

5. Aaron Koay Terr Yeow_G.8 (Exc. 14)

6. Dasarathan A/L Rajan Theren_G.6 (Exc. 15)

7. Anis shafika bt Mohd Zaini_G.6 (Exc.16)

8. Loh Yang Tee_G.5 (Exc. 17)

9. Syamsuri B Hamzah_G.5 (Exc. 18)

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