Op Amp Attenuator Circuit. Then you can have a larger input resistor r2 for gain less than unity. R1 10kωin most cases.
Multiple input summing amplifier. The inverting attenuator below uses a t pad to accomplish attenuation and avoid the instability issue completely. The inverting circuit of figure 2 can be used as an attenuator by making rg larger than rf.
One very useful feature of an op amp is impedance transformation.
Since the op amp input is high impedance the attenuation is set by the resistor divider. To maintain ideal relationships for all op amp circuits. The inverting circuit of figure 2 can be used as an attenuator by making rg larger than rf. Since the op amp input is high impedance the attenuation is set by the resistor divider.
