反相运放增益计算器 — 公式
## Inverting Op-Amp Configuration
### Formula
**Gain = -Rf / Rin**
**V_out = -(Rf / Rin) x V_in**
The negative sign means the output is 180 degrees out of phase with the input. Input impedance equals Rin.
### Formula
**Gain = -Rf / Rin**
**V_out = -(Rf / Rin) x V_in**
The negative sign means the output is 180 degrees out of phase with the input. Input impedance equals Rin.
计算示例
Rin = 10k, Rf = 100k, input signal is 0.5 V.
- Gain = -100 / 10 = -10 V/V
- Gain in dB = 20 x log10(10) = 20 dB
- V_out = -10 x 0.5 = -5.0 V