Design of low noise transimpedance amplifier for Intravascular Ultrasound

In this paper, we study transimpedance amplifiers for capacitive sensing applications with a focus on intravascular ultrasound (IVUS). We employ RF noise cancellation technique on capacitive feedback based transimpedance amplifiers. This technique eliminates the input-referred noise of TIAs completely and enhances the dynamic range of front-end electronics. Simulation results verify the proposed technique used in two different TIA topologies employing shunt-shunt feedback.