Consider an amplifier of this output-input characteristics: Vo = C₁ V₁ + C₂ V2 + ...... Assume these inputs: fA(t) = a cos wдt fB(t) = b cos WBt Also assume: C₁ = 0 Cn for n > 3 Find the following: a. The level of the 2nd & 3rd harmonics relative to the fundamental if only one input is used. b. Repeat if the sum of two inputs is used. c. Repeat if the difference of two inputs is used. For b & c the amplitudes of both inputs are the same.

Design a voltage to current converter amplifier. Assume that you have 5v input voltage to the non-inverting input with a frequency of 60hz and another input voltage to the inverting input with a frequency of 60hz, place it before the input resistance. What should be the value of your voltage input in inverting input and input resistance to get a reading of 38.22mA at exactly 22.20ms and what is the shape waveform of the current? What is the value of Rin in ohms?Rin = ____ ohms

a.derive the expression for the close- loop gain for an op amp non inverting amplifier b.the input of an op amp differentiator is a sinosiodial voltage peak of value 150uV voltage of frequency 10hz.determine the output voltage if the R=25ohms and C=2uf. c.An inverting amplifier has Rf=200ohms and R1= 12ohms. Determine the amplifier circuit voltage gain,input resistance and output resistance, determine also the output voltage, and input current if the voltage is 0.3. Assump it is an ideal op amp.

Perform an ac analysis. Represent the amplifier by its ac equivalent circuit and discuss the input resistance at the base and the output resistance. (You can draw the circuit by hand on paper and can paste the image) Determine the minimuuYo uired to put the

6. For common-source small-signal FETS, the output voltage is 180° phase shifted with respect to the Q 7. The operating cycle of a Class A amplifier is Q 8. The maximum efficiency of a Class B amplifier is Q 9. In analyzing op-amps, when the non-inverting input pin is at ground and the inverting input pin is also at 0 V for an AC signal, the technique is called as Q 10. is an op-amp application circuit which is useful in low pass filter circuits.

The term duty cycle refers to the amount of time a signal is complete cycle. A. off compared to the period of one B. on The output voltage of op-amp is positive saturation, when the voltage applied to the input is greater than the input. A. inverting B. noninverting A square wave that is 20V at its high state and OV when it is off will produce an average DC when its duty cycle is 75%. Formula: VOUT = Duty Cycle * Peak voltage voltage of A. 7.5V B. 10V C. 15V

Figure 6 (a) shows the circuit diagram for a differential amphfier. You may assume that M and M, have identical parameters. Referring to Figure 6 (a): (a) What kind of amplifier is it? What is its role in a three-stage op amp? Draw the small signal equivalent eircuit and derive the differential voltage gain Aag. For the analysis consider RDI RD2 >>Rp State any assumption. (b) RD. gml gm gm, and r re=r What is the new Adr in the circuit of Figure 6 (b), where a PMOS current source has replaced the two drain resistors Ror R Rp and a NMOS current sink has replaced the source resistor Rs? (c) What are the advantages in using the circuit of Figure 6 (b) instead of Figure 6 (a) to realize an op amp? (d) Ven Ms Mg Rp1 Rpa Vo HM, My M Ma M3 Vss 0 V Vss 0 V Figure 6(b) Figure 6 (a)

The following Operational Amplifier circuit is given. Analyze the circuit carefully to identify the functions (i.e., OP-AMP configurations) of each OP-Amps. Calculate the first stage output voltage Vx and then the output voltage at the output of the second stage Vo . Determine the currents I0, IF, and IX . Finally, determine the power absorbed by the resistor R7. The resistors: R2 = R4 =100 kiliohm. R1 = R3 = 10 kiliohm, R5 = 10 kiliohm, R6 = 90 kiliohm. and R5 = 10 kiliohm. The load resistor R7 = 10 kiliohm. The current source; I1 = 100μA and V2 = 1V.

3D Problem 1. (P1) Three op-amps are connected in cascade configuration. An 80 microVolts signal is connected to the non-inverting input of the first op-amp. Both the 2nd and 3rd op-amps operates as inverting amplifiers. All feedback resistors are 420 KOhms while the input resistances are 71.4kOhms, 19.1kOhms, and 14KOhms respectively. Determine the output of the third stage stage. a.9 V b.9000 mV c.79.2 V d.792 mV

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