Question 2 Design a differential amplifier like the one shown below, that has differential gain of 5 and differential input resistance of 20 ka Determine the values of R1 and R2 R2 RI Vo Vid RI R2 OR1= 20 kO and R2= 100 kn OR1= 10 kQ and R2= 50 kO OR1= 50 ko and R2= 20 k
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- An inverting amplifier is built with R2 =47kΩ and R1 = 2.4kΩ using an op amp with an open-loop gain of 100 dB, an input resistance of 300 kΩ, and an output resistance of 200 Ω. What are the closed-loop gain, input resistance, and output resistance for this amplifier? (b) Repeat if the open-loop gain is changed to 94 dB.Q2/B)- Show the connection of three combination op-amp stages ( Parallel and series connection) using an LM348 IC to provide outputs that are 110, 400, and 2601 times larger than the input. Use a feedback resistor of Rf = 500 k? in all stages, while can use only (R= 50 k? for first stage), (R= 25 k? for second stage), and (R= 10 k? for third stageQuestion 1: a. For the circuit shown, determine V0 when R1 = 1.8 kΩkΩ, R2 = 80 kΩ, Vx = 100 mV, Vy = 10 mV, and Vcc = 15V. b. For the circuit shown, determine R1 such that V0=m×(Vx−Vy). Assume mmm = 5.0 and R2 = 50 kΩ and that the op-amp is in its linear region of operation.
- A noninverting amplifier is built with R2 = 75 kΩ and R1 = 5.6kΩ using an op amp with an open -loop gain of 100dB, an input resistance of 500kΩ, and an output resistance of 300 Ω. What are the closed-loop gain, input resistance, and output resistance for this amplifier? (b) Repeat if the open-loop gain is changed to 94 dB.A noninverting amplifier is built with R1 = 12 kΩ and R2 = 150 kΩ using an op amp with an open-loop gain of 86 dB. What are the closed-loop gain, the gain error, and the fractional gain error for this amplifier? (b) Repeat if R1 is changed to 1.2 kΩ.An inverting amplifier is built with R1 =11kΩand R2 = 220 kΩ using an op amp with an open-loop gain of 86 dB. What are the closed-loop gain, the gain error, and fractional gain error for this amplifier? (b) Repeat if R1 is changed to 1.1 kΩ.
- A noninverting amplifier is built with R2 = 47 kΩ and R1 = 6.2k Ω using an op amp with an open-loop gain of 94 dB. What are the closed-loop gain, the gain error, and the fractional gain error for this amplifier? (b) Repeat if the open-loop gain is changed to 100 dB.Show the connection of a three-stage amplifier with gains of +10, -18, and -27.Use a 270-kΩ feedback resistor for all three 741 op-amp circuits. What outputvoltage will result for an input of 150 mV?Design an amplifier with an overall gain Av = -15 where the input voltage vi has a source impedance (Ri) of 2kW and the amplifier has an input impedance of 4kW, VBE,on = 0.7V and β =200. The amplifier requires a maximum output voltage swing. Determine all resistor values, Ai and the maximum voltage swing.
- The amplifier as shown has R1 = 8.2 k ,R2 = 160 k and operates from ±12-V powersupplies. (a) What is the voltage gain Av = vo/viof the circuit? (b) Suppose input source vi is notideal but actually has a 1.5 k source resistance.What is the voltage gain Av = vo/vi?It is understood that the voltage comparators can utilise either a no-feedback (open-loop) operation or a positive-feedback operation. The op-amp LF411 is a high-speed comparator and for a circuit utilising it (shown in Fig. A2c), assume that an input (Vin) with 10 V peak amplitude at 1 Hz frequency is being applied. Please describe and draw the comparator output (Vo) by clearly labelling axes, threshold voltages and the saturation voltages in your sketch. Also show any supporting calculations including the calculation of Vref at the non-inverting terminal.Q4/A)- Show the connection of three combination op-amp stages using an LM348 IC to provide outputs that are 110, 1681, and 420 times larger than the input. Use a feedback resistor of Rf = 400 k? in all stages, while can use only (R= 40 k? for first stage), (R= 10 k? for second stage), and (R= 20 k? for third stage