EE ToolsEE TOOLS

Difference Amplifier Calculator

Vout
1.000 V
Gain
1.00
R₃/R₁
Difference AmplifierV₁1.00VR110.0kΩI₁V₂2.00VR210.0kΩI₂VaVbR410.0kΩ−+R310.0kΩIfVout1.000VGain = 1.00
VDD:V
VSS:V
V₁0.00V
5.00V
V
V₂0.00V
5.00V
V
V₂ − V₁ =1.000V
Show formulas

General Difference Amplifier

Vout=−V1(R3R1)+V2(R4R2+R4)(R1+R3R1)V_{out} = -V_1 \left( \frac{R_3}{R_1} \right) + V_2 \left( \frac{R_4}{R_2 + R_4} \right) \left( \frac{R_1 + R_3}{R_1} \right)

Balanced Configuration (R₁ = R₂ and R₃ = R₄)

Vout=R3R1(V2−V1)V_{out} = \frac{R_3}{R_1} (V_2 - V_1)

Variables:

• V₁ = Voltage at inverting input (through R₁)

• V₂ = Voltage at non-inverting input (through R₂)

• R₁ = Input resistor for V₁ (to inverting input)

• R₂ = Input resistor for V₂ (to non-inverting input)

• R₃ = Feedback resistor (from output to inverting input)

• R₄ = Resistor from non-inverting input to ground

Want to learn more?

EE Tools is not affiliated with these websites. Just sharing helpful resources.