作者: 超級狗 时间: 2013-4-3 11:24 The Inverting Amplifier 3 w4 K0 G3 z. \Fig. 6.7.3 shows the inverting amplifier, in this configuration the signal input is applied to the inverting (−) input to produce an anti-phase output signal whose amplitude is Vin x Avcl where Avcl is the closed loop gain of the op amp. / M- r! L5 n. C I2 j( G( a! o+ {3 y& D- s5 G0 X5 |
Negative feedback is used to reduce the op amp’s very high maximum gain to the required level. The closed loop gain (Avcl) is set simply by the ratio of Rf to Rin.