Title :
Current-mode preamplifier for response measurement of semiconductor scintillator
Author :
Xiao Yun;Milutin Stanacevic;Vladis Kuzminsky;Mikhail Gouzman
Author_Institution :
Department of Electrical and Computer Engineering, Stony Brook University, NY, USA
Abstract :
A design of front-end preamplifier for measurement of optical response of photo-detector registering light produced by semiconductor scintillator is presented. The designed preamplifier is based on a current mode, regulated cascode (RGC) structure. A comparison with a previously reported common gate (CG) structure is provided. The experimental prototype was designed in 0.5μm CMOS process. With a 5 V power supply, total power consumption of a chip is 7.5mW. With 50 pF input capacitance and 100 nA leakage current of interfaced photo-detector, the equivalent noise charge (ENC) is 8000.
Keywords :
"Noise","Preamplifiers","Capacitance","Logic gates","Detectors","Parasitic capacitance","Mirrors"
Conference_Titel :
Circuits and Systems, 2008. MWSCAS 2008. 51st Midwest Symposium on
Print_ISBN :
978-1-4244-2166-4
Electronic_ISBN :
1558-3899
DOI :
10.1109/MWSCAS.2008.4616820
