Title :
Design of low noise transimpedance amplifier for Intravascular Ultrasound
Author :
Reda, Dina ; Hegazi, Emad ; Salama, Khalad N. ; Ragai, Hani Fikry
Author_Institution :
Integrated Circuits Lab., Ain Shams Univ., Cairo, Egypt
Abstract :
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.
Keywords :
biomedical ultrasonics; operational amplifiers; sensors; RF noise cancellation technique; capacitive feedback based transimpedance amplifiers; capacitive sensing applications; front-end electronics; input-referred noise; intravascular ultrasound; low noise transimpedance amplifier; shunt-shunt feedback; Capacitors; Catheters; Feedback; Frequency; Low-noise amplifiers; Noise cancellation; Piezoelectric transducers; Radiofrequency amplifiers; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2009. BioCAS 2009. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4917-0
Electronic_ISBN :
978-1-4244-4918-7
DOI :
10.1109/BIOCAS.2009.5372084
