Design of CMOS Low-Power, Low-Noise, Chopper Stabilized, Low Dropout Voltage Regulator and Bandgap Reference

This work presents a low-power, low-noise capacitorless low dropout regulator targeting noise sensitive integrated circuit applications. Designed and simulated in TSMC 90 nm CMOS technology, it supports an operating voltage range of 1.8-3.3 V ±5% and features a programmable output voltage range of 0.9 — 1.5 V. Capable of delivering 1 mA, it achieves a worst case PSRR of 25 dB at high frequencies, while its output noise, with the help of a chopper-stabilized error amplifier, does not exceed $ - 112dBV/\sqrt {Hz} $ at 1 mHz, and $ - 145dBV/\sqrt {Hz} $ at 10 Hz, while consuming only 70 μA. A bandgap reference is also designed achieving a reference of 700 mV with only 21.67ppm/°C.