TY - GEN
T1 - ASIC for SDD-based X-ray spectrometers
AU - Rehak, Pavel
AU - De Geronimo, Gianluigi
AU - Ackley, Kim
AU - Carini, Gabriella
AU - Chen, Wei
AU - Fried, Jack
AU - Keister, Jeffrey
AU - Li, Shaorui
AU - Li, Zheng
AU - Pinelli, Donald A.
AU - Siddons, D. Peter
AU - Vernon, Emerson
AU - Gaskin, Jessica A.
AU - Ramsey, Brian D.
AU - Tyson, Trevor A.
PY - 2009
Y1 - 2009
N2 - We present an application-specific integrated circuit (ASIC) for high-resolution x-ray spectrometers (XRS). The ASIC reads out signals from pixelated silicon drift detectors (SDDs). The pixel does not have an integrated field effect transistor (FET); rather, readout is accomplished by wire-bonding the anodes to the inputs of the ASIC. The ASIC dissipates 32 mW, and offers 16 channels of low-noise charge amplification, high-order shaping with baseline stabilization, discrimination, a novel pile-up rejector, and peak detection with an analog memory. The readout is sparse and based on custom low-power tristatable low-voltage differential signaling (LPT-LVDS). A unit of 64 SDD pixels, read out by four ASICs, covers an area of 12.8 cm2 and dissipates with the sensor biased about 15 mW/cm2. As a tile-based system, the 64-pixel units cover a large detection area. Our preliminary measurements show a FWHM of 145 eV at the 5.9 keV peak of a 55Fe source, and less than 80 eV on a test-pulse line at 200 eV.
AB - We present an application-specific integrated circuit (ASIC) for high-resolution x-ray spectrometers (XRS). The ASIC reads out signals from pixelated silicon drift detectors (SDDs). The pixel does not have an integrated field effect transistor (FET); rather, readout is accomplished by wire-bonding the anodes to the inputs of the ASIC. The ASIC dissipates 32 mW, and offers 16 channels of low-noise charge amplification, high-order shaping with baseline stabilization, discrimination, a novel pile-up rejector, and peak detection with an analog memory. The readout is sparse and based on custom low-power tristatable low-voltage differential signaling (LPT-LVDS). A unit of 64 SDD pixels, read out by four ASICs, covers an area of 12.8 cm2 and dissipates with the sensor biased about 15 mW/cm2. As a tile-based system, the 64-pixel units cover a large detection area. Our preliminary measurements show a FWHM of 145 eV at the 5.9 keV peak of a 55Fe source, and less than 80 eV on a test-pulse line at 200 eV.
UR - https://www.scopus.com/pages/publications/77951190601
UR - https://www.scopus.com/pages/publications/77951190601#tab=citedBy
U2 - 10.1109/NSSMIC.2009.5402415
DO - 10.1109/NSSMIC.2009.5402415
M3 - Conference contribution
AN - SCOPUS:77951190601
SN - 9781424439621
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1088
EP - 1095
BT - 2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
T2 - 2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Y2 - 25 October 2009 through 31 October 2009
ER -