SETTLING TIME MINIMIZATION OF THREE-STAGE CROSSED FEEDFORWARD REVERSED NESTED-MILLER AMPLIFIER

摘要

Conventional frequency response compensation methods for three-stage amplifier are not appropriate for fast transient response viewpoint. Therefore, herein, we have utilized the minimum settling time (MST) approach to compensate the crossed feed-forward reversed nested Miller compensation (CFRNMC) amplifier which was previously compensated by the conventional frequency response methods. Compensation rules for the considered amplifier are proposed based on time-domain parameters. The three-stage amplifier is designed in a 90 nm CMOS technology with the power supply of 1V. The amplifier drives the capacitor load of 100 pF and its closed-loop time response to a unit-step input has a settling time less than 34 ns with 1% settling error.