Problem 1 Given an INA126 instrumentation amplifier below $E_{in+}$ = 2.53 V $E_{in-}$ = 2.41 V a. Calculate the resistor $R_g$ needed to obtain a voltage gain $A_v$ of 180. b. Calculate the output voltage of the circuit. (33.32 points):
Added by Jennifer O.
Close
Step 1
Step 1: The voltage gain of an instrumentation amplifier is given by: $$A_v = 1 + \frac{2R_g}{R_1}$$ where $R_1$ is the resistance of the internal resistors of the INA126. Show more…
Show all steps
Your feedback will help us improve your experience
Patha Sharma and 75 other Physics 102 Electricity and Magnetism educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
P3. For the instrumentation amplifier configuration shown in the figure: a. What is the overall voltage gain of the amplifier? b. Assume that the following voltages are applied to the instrumentation amplifier Vin1 = 20 mV and Vin2 = 25 mV. Determine the voltage at nodes a, b, c, d, e, and the final output voltage Vout. c. If the range of variation of Vin2 - Vin1 is from -10 mV to +10 mV. Find the value of R1 that must be used so that the corresponding range of Vout is from -5 V to +5 V. d. If the resistance R2 connected to the op-amp A1 is changed to 110 kΩ, what will be the modified overall voltage gain of the amplifier?
Patha S.
D 2.22 (a) Design an inverting amplifier with a closed-loop gain of -200 V/V and an input resistance of 1 kΩ. (b) If the op amp is known to have an open-loop gain of 5000 V/V, what do you expect the closed-loop gain of your circuit to be (assuming the resistors have precise values)? (c) Give the value of a resistor you can place in parallel (shunt) with R1 to restore the closed-loop gain to its nominal value. Use the closest standard 1% resistor value (see Appendix J). (d) Alternatively, give the closest standard resistor value that may be connected in series with R2 to restore the closed-loop gain to its ideal value.
Adi S.
D 11.53 The feedback transconductance amplifier in Fig. P11.53 uses a differential amplifier with a voltage gain μ, an input resistance Rid = 100 kΩ, and an output resistance ro1 = 1 kΩ; and a MOSFET with gm = 2 mA/V and ro2 = 20 kΩ. (a) Find the value of R2 that results in the closed-loop gain Io/Vs having an ideal value of 100 mA/V. (b) Find the value of β and sketch the two-port feedback circuit. (c) Find the loading effects of the feedback circuit, R11 and R22. (d) Give the A circuit and find an expression for A in terms of μ. (e) Find the value of μ that results in a 40-dB amount of feedback. (f) Find the realized value of Af. (g) Find Rin and Rout. 800 Ω; (b) 0.01 V/mA; (c) 90 Ω, 90 Ω; (d) 1.687 μ mA/V; (e) 5868 V/V; (f) 99 mA/V; (g) 10 MΩ, 2.37 MΩ
Sri K.
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD