Title :
High-speed, low input current transimpedance amplifier for led-photodiode pair
Author :
Boukadoum, Mounir ; Obaid, Abdellatif
Author_Institution :
Dept. d´´Inf., Univ. of Quebec at Montreal, Montreal, QC, Canada
Abstract :
A low current front-end transimpedance amplifier (TIA) circuit for a high-speed light emitting diode (LED) and photodetector (PD) pair is presented. It mitigates PD capacitance effects by using a low input impedance buffer between the PD and the amplifier´s input stage. Our simulation results show that a bandwidth in excess of 100 MHz can be reached for PD currents below 100 nA in amplitude. An actual circuit was built to confirm the projected capabilities of the system.
Keywords :
amplifiers; light emitting diodes; photodetectors; photodiodes; LED-photodiode pair; TIA circuit; photodetector pair; transimpedance amplifier; Bandwidth; Capacitance; Circuits; Filters; Light emitting diodes; Operational amplifiers; Photodetectors; Photodiodes; Pulse amplifiers; Radiofrequency amplifiers; Photodetector; front end; photodiode; transimpedance amplifier;
Conference_Titel :
Signal Processing and Communications, 2007. ICSPC 2007. IEEE International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-1235-8
Electronic_ISBN :
978-1-4244-1236-5
DOI :
10.1109/ICSPC.2007.4728520
