Compensation of some operational-amplifier based RC-active networks

Means of compensating for the finite gain bandwidth of operational amplifiers, when used in voltage-controlled voltage source and inverting integrator blocks, are described and are shown to virtually eliminate excess phase shifts over a prescribed frequency range. As applied to integrators, the compensating technique simultaneously reduces gain (period) and phase errors. The methods should prove of maximum advantage where trimming of theRCelements is difficult or expensive as in thin-film realizations. It is shown that the overall temperature stability of the compensated network can be significantly improved.