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Inverting Op-Amp Resistor Calculator
Input Parameters
Calculated Resistors
R2 (Feedback): - kΩ
R3 (Bias): - kΩ
R4 (Offset): -
Frequently Asked Questions (FAQ)
Q: Why should gain be negative for inverting op-amps?
A: In an inverting configuration, the output signal is 180 degrees out of phase with the input signal, which is mathematically represented by a negative gain value.
Q: What is the purpose of R4 in this circuit?
A: R4 is typically used to introduce a DC voltage offset to the output signal, allowing you to shift the output bias point as needed.
Q: How does R1 affect the design?
A: R1 determines the input impedance of the amplifier. Selecting a larger R1 increases input impedance but may increase noise and susceptibility to parasitic capacitance.
