0.5 V bulk-driven ring amplifier based on master–slave technique

This paper presents a new non-clocked standalone bulk-driven ring amplifier based on master–slave technique that ensures stable operation under process, supply voltage and temperature variations. Unlike the conventional ring amplifier the proposed topology operates without the switched capacitor technique under extremely low supply voltage. The bulk-driven ring amplifier was designed using a triple-well 0.18 µm CMOS technology. The simulation results show a 91 dB gain with 13 μW power dissipation from a 0.5 V supply voltage and the total harmonic distortion was equal to 0.29 %.