Noise and Bandwidth in Operational Amplifiers for Conventional TIAs used in Visible Light Communication

Trans-impedance amplifiers play an essential role in the physical layer of visible light communication systems. They are applied in the first stage of a visible light communication receiver. This short paper is a follow-up from a previous study about the bandwidth and noise of Op-Amp based trans-impedance amplifier as used in visible light communication systems through two approaches: calculation and simulation. The results of both calculation and simulation are then compared through several scenarios. In this study, the Orozco approach is used as a fundamental reference in calculating the trans-impedance amplifier’s bandwidth and noise. Whereas for simulation, we used TINATM-SPICE®