Express the input voltages v; and vz in terms of differential input (va) and common-mode input(v.). Given vz > V2. a) Va = V, - V2, Vc = 0.5(V, + V2) b) Va = V2 - V1, Vc=V, + V2 c) Va = V1 - V2, Ve = V, + V2 d) V. = V, - V1, V. = 0.5(V, + V2)

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Consider the op-amp circuit shown in Figure below, where the op amp has infinite inpu resistance and zero output resistance but finite open-loop gain. a) Prove that B = R1/R1 + R2. b) If R1 10 ka, find R2 that results in G 10 V/V for the following three cases: i A = 1000 V/V A ii. A = 200 V/V iii. A = 15 V/V %3D Vo Vs R2

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Design an instrumentation amplifier like that pictured in Figure 1 by choosing appropriate resistor values Ra1, Ra2, RG, and R1, R2, R3, and R4, such that the overall differential gain is as close as possible to 25. Choose values in the 10s of k ohm range. Divide the gain between the stages as you wish, but justifyyour design choices. (Q1) Explain the chosen values and give a rationale.

The above cascade circuit uses ideal op-amps. Assume the following: in the second picture Find A of vo1(t) in units of [V ]. Find B of vo1(t) in units of [V ]. Find F of vo2(t) in units of [V ].  Find G of vo2(t) in units of [V ].    Thank you!

For the circuit shown below, assume ideal op-amp, (a) Derive the expression for the output voltage in terms of vi, v2, R1, R2, and R3. (b) If R1 = 4 kn, design the circuit to satisfy the following relation: vo =- 22(v2 - 7v1) R2 R3 R1 vị o ww R1 R1 V2 Insert below the value of R2 in kn

R2 R1 V. V1 RL V2 For the above circuit determine the Op-Amp output current Io 1. ++

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