DocumentCode
3327054
Title
A high-speed 2nV/Hz1/2 16-channel current amplifier IC for PET
Author
Rostaing, Jean-Pierre ; Peizerat, Arnaud ; Billoint, Olivier ; Montémont, Guillaume ; Monnet, Olivier
Author_Institution
CEA, MINATEC, Grenoble, France
fYear
2009
fDate
Oct. 24 2009-Nov. 1 2009
Firstpage
322
Lastpage
323
Abstract
A 16 channel front-end IC dedicated to small animal positron emission tomography has been developed for cross-strip CdTe detectors. Each channel, designed to handle up to 20 pF detector capacitance, includes both low voltage (2 nV/Hz1/2) and low current (40 fA/Hz1/2) noise, high bandwidth (50 MHz at 20 pF detector capacitance) current amplifier with a gain of 100 for a power consumption of 4.7 mW. Both anode and cathode connection to the detector are possible thanks to an external control signal selecting the input common polarity. Input has been designed for maximum peak current of +/-1 A. Additional ¿charge amplifier¿ functionality is available via a single external control pin, extending functionality to X-ray or gamma-ray detection, fast instrumentation. Circuit size is 2×8 mm2 in 0.35 ¿m 3.3 V CMOS process. Each channel differential output is buffered by a transconductance amplifier with two balanced differential current outputs compliant with 50 Ohm terminations.
Keywords
X-ray detection; amplifiers; gamma-ray detection; nuclear electronics; positron emission tomography; semiconductor counters; CMOS process; X-ray detection; balanced differential current outputs; channel differential output; charge amplifier functionality; circuit size; cross-strip CdTe detectors; detector capacitance; external control signal; front-end IC; gamma-ray detection; high bandwidth current amplifier; input common polarity; low current noise; maximum peak current; power consumption; small animal positron emission tomography; transconductance amplifier; Animals; Anodes; Bandwidth; Detectors; Electrical capacitance tomography; Energy consumption; High power amplifiers; Low voltage; Low-noise amplifiers; Positron emission tomography;
fLanguage
English
Publisher
ieee
Conference_Titel
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location
Orlando, FL
ISSN
1095-7863
Print_ISBN
978-1-4244-3961-4
Electronic_ISBN
1095-7863
Type
conf
DOI
10.1109/NSSMIC.2009.5401723
Filename
5401723
Link To Document