Current-mirror miller compensation: An improved frequency compensation technique for two-stage amplifiers

A novel current-mirror miller compensated two-stage amplifier is presented. The proposed design improves both large-signal performance and small-signal performance of conventional two-stage amplifiers. This design eliminates the low-frequency right half-plane zero and reduces the output parasitic capacitance of the first stage without inducing additional input offset voltage and DC⁸ gain degradation⁸ Detailed ansisi performed to justify the proposed design. The design is simulated in UMC130 CMOS technology. Simulations agree well with analysis. This idea may be extended to multistage amplifiers, low-dropout regulators and other applications.