Question:
Choose the minimum number of op-amps required to implement the given expression. $ V_o = \left[ 1 + \frac{R_2}{R_1} \right] V_1 - \frac{R_2}{R_1} V_2 $
Choose the minimum number of op-amps required to implement the given expression. $ V_o = \left[ 1 + \frac{R_2}{R_1} \right] V_1 - \frac{R_2}{R_1} V_2 $
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A single op-amp in differential configuration is sufficient for performing both subtraction and scaling of two input signals.
Updated On: Apr 10, 2025
- Two
- Four
- Three
- One
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The Correct Option is D
Solution and Explanation
The given expression represents the output of a differential amplifier where one op-amp is used to perform both subtraction and amplification. Therefore, only one op-amp is needed to implement this.
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