A novel approach to designing a noninverting integrator with built-in low frequency stability, high frequency compensation, and high Q

A novel approach to designing a noninverting integrator, by inverting the transfer functions of a passive RC differentiator, is presented. It results in a built-in zero that extends the frequency range of the integrator. In addition, the resulting circuit acts as an amplifier for DC input voltages and thus exhibits a built-in low-frequency stability. The noninverting integrator realization of the concept performs at higher frequencies with higher quality factors. the classical inverse design approach is used to obtain the inverse of a transfer function. Experimental results corroborating the theoretical predictions are reported. Simulation results, using Microcap II, also corroborate the theoretical expectations.>