Most general-purpose op amps can be used at any closed-loop gain. But this flexibility comes at a price: the unity-gain frequency has to be kept relatively low to prevent oscillation.

Surprisingly, sensitivities are independent of Q. However, the higher the Q, the higher the op amp open loop gain must be to provide enough margin to accurately implement the required op amp closed ...

1. A closed-loop op amp in an inverting amplifier configuration. To refresh our mathematical skills, let’s revisit the derivation of the famous V OUT/ V IN.

Closed loop gain response The circuit as described so far, has been designed to produce a constant output power level. If the detector has a high dynamic range, the circuit can precisely set PA output ...