Required information The circuit shows a two-op-amp instrumentation amplifier. 210 R₂/ R1= www.l R₂ ww R₁ R4 A R3 -0% 1/20 If R3= 16 kn, and R4= (gain-1)*R3 k, what must the relative values of R2 and R₁ be in order to implement a subtractor with out gain(v2v₁)? Assume gain = 4.

Consider the following op-amp circuit, where Vin = 2V. The Op-Amp is powered by ±15V power sources. R1 = 10 k2 and R₂ = 35 k. Part A - What is the power dissipated by a load resistor of 100 k between ground and the output pin? ANSWER: Part B - mW For the circuit in part A, what is the total power supplied by the op amp? ANSWER: Part C- mW What would the total power supplied by the op amp be if the load resistor was 10 kQ? ANSWER: mW Part D- If the op amp can provide at most +/- 35 mA, what is the smallest load resistor you could have before hitting the current limit of the op amp? ANSWER: Ω

The op amp in the circuit in is ideal. Part A What op amp circuit configuration is this? ANSWER: v₂ = A difference amplifier circuit. An inverting summing amplifier. A non-inverting summing amplifier, R Part B Find an expression for the output voltage v, in terms of the input voltage v. Assume that is in volts. Suppose Ry = 20 kn. Express your answer in terms of V. ANSWER: V Part C Suppose v₁ = 2 V. What value of Ry will cause the op amp to saturate? Express your answer to three significant figures and include the appropriate units. ANSWER: 21 5 kn w 8 k 9-67-5 2 V m 10 V -10 V 27 k

One of the most common applications of the op-amp is the inverting amplifier. The output is inverted relative to the input and the amplification gain is determined by the ratio of the feedback resistor (R2) to the input resistor (R1). 1. Analytically determine the "gain" of the inverting amplifier shown in Figure 2 (not including Capacitor C1). C1 1 nF R2 10 kQ Vss R1 Vdd Vin 1 ko Vout OA1 V2 V3 TLO81 5 V -5 V V1 ^) sine 1 kHz Vss