Low Power Transimpedance Amplifier (TIA) Using Bulk Driven FVF

Abstract

In this paper a low power transimpedance amplifier is designed using Bulk driven flipped voltage follower- FVF. A bulk driven MOS is used as current source in FVF topology instead of normal current source. This change in FVF topology helps to execute class AB operation of FVF and thus gives symmetrical slew rate. This circuit works on power supply of 1.8V with very less power consumption of 0.371mW. The transimpedance gain is increased by 4 % and −3 dB bandwidth also increased by 152%. The reliability of proposed circuit is tested at different temperature and load capacitor. The result shows the proposed work performance is improved as compared to conventional FVF configuration of TIA. This circuit can be used in low power medical devices and high portability electronics devices due to its advantage of very less power consumption.