Shunt-feedback transimpedance amplifier in 0.18μm CMOS technology

Low noise and low Power transimpedance amplifiers (TIA) are essential module for optical sensor based systems. But low power and low noise TIAs are still a challenge for the scientists despite of rapid advances in complementary metal oxide semiconductor (CMOS) technology. This paper proposes a three-stage nested miller compensated (NMC) based design of low noise low power transimpedance amplifier for stable wideband operation. The circuit is designed in the 0.18μm CMOS technology by using Mentor Graphics environment. The simulation results show that the proposed TIA can operate at frequency 20 KHz and produces an output of 1.4265V for ±1.2 V input voltages dissipating only 2.9206 mW power at 27°C temperature. The complete layout of the TIA is only 0.005 μm2. This shunt-feedback TIA can be a better choice for high-resolution, low-to mid frequency applications.