Embedded advanced capacitor multiplier compensation for two-stage amplifier with large capacitive loads

An embedded capacitor multiplier compensation (EACMC) for two-stage amplifier with large capacitive loads is presented in this paper with detailed theoretical analysis. Two voltage-controlled current sources are inserted in the proposed capacitor multiplier which is embedded in the first stage. With the advanced capacitor multiplier, the gain factor of the multiplier is enhanced and the compensation capacitor is reduced significantly. Furthermore, the GBW achieved is extended as a result. The proposed circuit is designed and simulated in 0.13μm standard CMOS process. Simulation results show that the EACMC amplifier, driving a 1200 pF capacitive load, achieves a GBW of 1.51 MHz while dissipating 154 μW power with a compensation capacitor of only 0.85 pF.