For a differential amplifier configuration with V1 grounded, how would you express the output voltage (Vo) as a function of the input voltage V2?

For a differential amplifier configuration with V1 grounded, how would you express the output voltage (Vo) as a function of the input voltage V2?

• A. Vo = (R2/R1) * V2
• B. Vo = (1 + R2/R1)(Vn)
• C. Vo = (R4/R3) * V2
• D. Vo = R2 * V2

Answer: (B)

In a differential amplifier configuration, the output voltage (Vo) is typically influenced by the voltage difference between two input terminals, which in this case are V1 (grounded) and V2. When V1 is grounded, the amplifier compares V2 against 0 volts (ground). In a standard differential amplifier, the output voltage can be expressed in terms of the input voltages and the configuration of the resistors. The transfer function of a differential amplifier, when configured correctly with feedback resistors, can be derived from the circuit's operational characteristics. The equation Vo = (1 + R2/R1) * Vn shows that the output voltage Vo is proportional to an input voltage (in this case, Vn, which represents the difference between V1 and V2) scaled by an amplification factor that depends on the ratio of the resistors. Here, (1 + R2/R1) acts as the gain of the amplifier due to the feedback network. When V1 is grounded, Vn becomes equal to V2 since V1 = 0V. Therefore, this relationship captures how the output voltage of the differential amplifier changes in response to variations in the input voltage V2 therefore allowing one to express Vo as a function

In a differential amplifier configuration, the output voltage (Vo) is typically influenced by the voltage difference between two input terminals, which in this case are V1 (grounded) and V2. When V1 is grounded, the amplifier compares V2 against 0 volts (ground).

In a standard differential amplifier, the output voltage can be expressed in terms of the input voltages and the configuration of the resistors. The transfer function of a differential amplifier, when configured correctly with feedback resistors, can be derived from the circuit's operational characteristics.

The equation Vo = (1 + R2/R1) * Vn shows that the output voltage Vo is proportional to an input voltage (in this case, Vn, which represents the difference between V1 and V2) scaled by an amplification factor that depends on the ratio of the resistors. Here, (1 + R2/R1) acts as the gain of the amplifier due to the feedback network.

When V1 is grounded, Vn becomes equal to V2 since V1 = 0V. Therefore, this relationship captures how the output voltage of the differential amplifier changes in response to variations in the input voltage V2 therefore allowing one to express Vo as a function