Assume the differential-mode gain of a diff-amp is
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Microelectronics: Circuit Analysis and Design
- Which of the following is/are the characteristics of ideal amplifiers? 1. Open loop profits are infinite II. Bandwidth is infinite III. Output resistance is infinite Please choose one: A.I, II, III b. I, II C. Lonely II D. LOnely I e. Lonely IIIarrow_forward2. For the differential amplifier circuit shown below , calculate the output voltage (including polarity) for the following values of V X and V Y .a. V X = 1.5 V and V Y = - 1 V.b. V X = - 2 V and V Y = - 1.5 V.c. V X = 8 V and V Y =10 V.d. V X = 5.5 V and V Y = 6.25 V.arrow_forwardShow Solution: A single-stage amplifier has a 200-kHz bandwidth and a voltage gain of 100 at room temperature. Assume that the external noise is negligible and that a 1-mV signal is applied to the amplifier’s input. Calculate the output noise voltage if the amplifier has a 5-dB NF and the input noise is generated by a 2-kΩ resistor. ANSWER: 451.6 uVarrow_forward
- We need a voltage follower to amplify an input signal given by vin(t) =0t≤0 =t20≤t≤3 =93≤t in which t is in μs. Determine the minimum slew-rate specification required for the op amp if distortion must be avoided.arrow_forward1.Design a noninverting amplifier (as shown) with a gain of 6, using a 75 kΩ resistor in the feedback path. Draw your final circuit daigram. 2.Suppose you wish to amplify input signals in the range −2.5 V≤vg≤1.5 V. What are the minimum values of the power supplies that will keep the op amp in its linear operating region?arrow_forwardBuild an instrumentation amplifier with differential gain varying between 300 and 1000.arrow_forward
- 7. When the automatic gain control voltage of a radio receiver is measured with a vacuum tube voltmeter whose input resistance is 10 M-ohm, it reads 4.5 V. When an ordinary voltmeter whose input resistance is 10 k-ohm is also connected across the AGC voltage source, both meters read 0.40. What is the internal resistance of the AGC voltage source? 8. A phonograph pick up develops an open-circuit emf of 50 mV and has an internal resistance of 1200 ohm. A. What voltage will it develop across a 4 ohms load resistance? B. What value of load resistance must be used to obtain a 75% eff? C. What is the maximum power output of the pickup? 9. What bleeder resistor is required to complete a voltage divider to give 300 v at 40 mA from a 500 V source of emf if the series dropping resistor is 4 k-ohm.arrow_forwardCalculate the overall voltage gain (Vo/Vi) of five stages of an amplifier, each having the following:- Stage one: Av(dB) = 16 dB, Low-Cutoff frequency = 168 Hz, High-Cutoff frequency = 1.26 MHz. Stage tow: Av(dB) = 8 dB, Low-Cutoff frequency = 320 Hz, High-Cutoff frequency = 2.6 MHz. Stage three: Av(dB) = 12 dB, Low-Cutoff frequency = 64 Hz, High-Cutoff frequency = 1.6 MHz. Stage four: Av(dB) = 6 dB, Low-Cutoff frequency = 12 Hz, High-Cutoff frequency = 1.8 MHz. Stage five: Av(dB) = 2.4 dB, Low-Cutoff frequency = 224 Hz, High-Cutoff frequency = 1.5 MHz. Determine the Low-Cutoff frequncy and High-Cutoff frequency of the overall amplifier? What is the gain-bandwidth product of the amplifier?arrow_forwardWhat are the voltage gain, input resistance, andoutput resistance of the amplifier as shownif R1 = 8.2 k ohm and R2 = 750 k ohm ? Express thevoltage gain in dB.arrow_forward
- Design an amplifier composed of 2 CE VDB amplifiers to have a total open circuit voltage gain of 120 dB. Also, use 2N2904 transistor and assume B = 120.arrow_forwardA- Calculate the common-mode output voltage and A, voltage gain for the circuit below, where V; = 5mV, Ry = 50K, Rg = 45K0, 1y = ryy = rp = 20K0 and B=p=p,=175.arrow_forwardAnswer the following (a) An amplifier with Ri = 330 kΩ, Aoc = 500 V/V, and Ro = 1.5 Ω isdriven by a source with Rs = 15kΩ and drives a load RL = 5.3Ω.Calculate the overall gain as well as the amount of input and output loading.(b) Repeat, but for a source with Rs = 29 kΩ and a load RL = 3.8 Ω.(c) Compare a and b.arrow_forward
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