Operational Amplifier as Differential Amplifier

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In this SPICE simulation the operational amplifier AD822AN with dual power supply +-12V works as differential amplifier. The ratio R2/R1 must be equal to R4/R3. A mismatch determines the common mode rejection capability of the circuit. The gain of amplifier is R2/R1.

  • Free
  • Simple
  • <10
  • NI Multisim
  • 11+
  • No
  • the gain is R2/R1


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