A 16-channel charge sensitive amplifier IC for a PIN photodiode array based PET detector module
Conference
·
· IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:6951044
- Lawrence Berkeley Lab., CA (United States)
A 16-channel integrated circuit charge sensitive preamplifier has been developed for a PET detector module that uses an 8 x 8 array of PIN photodiodes to identify the crystal of interaction. The amplifier, which is made using 1.2 [mu]m CMOS technology, produces an output of 100 mV per 1,000 e[sup [minus]] input, and its noise performance is optimized for 10 pF detector capacitance. The rise time, fall time, bias current through the first FET, and detector current compensation are each controlled by a dc current applied to the 2 mm square chip. The Johnson noise (e[sup [minus]] fwhm at 1 [mu]s peaking time) is 173 + 13C, where C is the input capacitance in pF, and the shot noise (e[sup [minus]] fwhm) is 16.4[radical]IT, where 1 is the detector dark current in pA and T is the amplifier shaping time in [mu]s. With this amplifier, the target noise of 300 [sup [minus]] fwhm can nearly be met with 300 [mu]m depletion thickness photodiodes (3 pF, 200 pA per 3 x 3 mm element).
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6951044
- Report Number(s):
- CONF-931051--
- Conference Information:
- Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 41:4PT1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
AMPLIFIERS
CAMERAS
COMPUTERIZED TOMOGRAPHY
DESIGN
DIAGNOSTIC TECHNIQUES
ELECTRONIC EQUIPMENT
EMISSION COMPUTED TOMOGRAPHY
EQUIPMENT
GAMMA CAMERAS
MEASURING INSTRUMENTS
POSITRON CAMERAS
POSITRON COMPUTED TOMOGRAPHY
PREAMPLIFIERS
RADIATION DETECTORS
RESOLUTION
SPATIAL RESOLUTION
TOMOGRAPHY
62 RADIOLOGY AND NUCLEAR MEDICINE
AMPLIFIERS
CAMERAS
COMPUTERIZED TOMOGRAPHY
DESIGN
DIAGNOSTIC TECHNIQUES
ELECTRONIC EQUIPMENT
EMISSION COMPUTED TOMOGRAPHY
EQUIPMENT
GAMMA CAMERAS
MEASURING INSTRUMENTS
POSITRON CAMERAS
POSITRON COMPUTED TOMOGRAPHY
PREAMPLIFIERS
RADIATION DETECTORS
RESOLUTION
SPATIAL RESOLUTION
TOMOGRAPHY