About
12-channel charge-sensitive preamplifier-shaper circuit with programmable peaking time from 0.75 µs to 4 µs and current compensation on each input. The dynamic range is from 0 to -5.43 fC which covers 3.5 keV to 140 keV in CdTe/CZT. The shaper is connected to a comparator with adjustable threshold settings. When the signal out from the shaper exceeds the comparator threshold a trigger signal is generated. Upon trigger, the ASIC delivers a package containing the triggering channel address and a value proportional to the energy of the deposited charge. The ASIC is then automatically reset, and ready for the next radiation event. The count rate of the ASIC is up to 100 kcps.
Publications
D.Meier, et al., 2013 ,“Development of an ASIC for the readout of CZT/CdTe radiation detectors in space,” Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE (2013), [doi: 10.1109/NSSMIC.2013.6829763]
Product Features
Detectors | CZT, CdTe |
Detectors | CZT, CdTe |
Application | Counting, Spectroscopy |
Number of inputs | 12 |
Input charge range | 12 0 fC to -5.14 fC |
Shaping time | 0.75 µs to 4 µs programmable |
Nominal capacitive load | 4 pF |
Equivalent Noise Charge (ENC) | 110e |
Trigger threshold | Adjustable |
Outputs | Multiplexed differential current and a digital interface for triggered readout packages. |
Test and calibration | Internal calibration circuit for gain calibration. |