Title :
Development of ASICs for CdTe pixel and line sensors
Author :
Tamura, Ken-ichi ; Hiruta, Tatsuro ; Ikeda, Hirokazu ; Inoue, Hokuto ; Kiyuna, Tatsuya ; Kobayashi, Yoshihito ; Nakazawa, Kazuhiro ; Takashima, Takeshi ; Takahashi, Tadayuki
Author_Institution :
Inst. of Space & Astronaut. Sci., Japan Aerosp. Exploration Agency, Kanagawa, Japan
Abstract :
We are developing low noise analog ASICs for hard X-ray and gamma-ray astronomy. They are based on a sub-micron CMOS process. Our design includes a finely-adjustable high-resistance circuit, which, for example, enables us to realize a pole-zero-cancellation in the analog chain. A two-dimensional ASIC with a fast read-out scheme and a one-dimensional ASIC with an improved analog design are developed and verified. With the latter ASIC connected with a CdTe detector, we have obtained a radioactive source spectrum with an energy resolution of 4.6 keV (FWHM) at 59.5 keV.
Keywords :
CMOS integrated circuits; X-ray astronomy; application specific integrated circuits; gamma-ray astronomy; high energy physics instrumentation computing; nuclear electronics; position sensitive particle detectors; radioactive sources; readout electronics; semiconductor counters; CdTe line sensors; CdTe pixel sensors; fast read-out scheme; finely-adjustable high-resistance circuit; gamma-ray astronomy; hard X-ray astronomy; low noise analog ASIC; radioactive source spectrum; sub-micron CMOS process; Application specific integrated circuits; Circuit noise; Energy resolution; Gamma ray detection; Gamma ray detectors; Operational amplifiers; Spatial resolution; Spectroscopy; X-ray detection; X-ray imaging; ASIC; CdTe; X-ray; gamma-ray;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2005.856872
