产品概要theca3isanasicwith32/64-channelsforenergyresolvedsingle-photoncountingoptimizedforczt/cdtedetectors
ca3 产品详情
产品概要the ca3 is an asic with 32/64-channels for energy resolved single-photon counting optimized for czt/cdte detectors. each channel consists of a preamplifier, two shaping amplifiers, 3 or 6 (depending on operating mode) discriminators and 16-bit counters.
the ca3 has to main modes: 32 channel with 6 energy levels discriminated or with 64 channels and 3 energy levels discriminated. each energy level is configured globally from input pads and can be adjusted per channel by internal dacs. the counters are outputted through a parallel interface, which makes it possible to connect multiple ca3 on the same bus.
keywords: energy resolved photon counting, singe-photon counting, x-ray and gamma-ray tomography
产品特性 性能参数
detectors czt, cdte
application counting, imaging
number of inputs 32 / 64
input charge range 0 fc to -4.2 fc
shaping time 50 ns
nominal capacitive load 10 pf
detectors czt, cdte
application counting, imaging
number of inputs 32 / 64
input charge range 0 fc to -4.2 fc
shaping time 50 ns
nominal capacitive load 10 pf
equivalent noise charge (enc) 105e + 40e/pf
trigger threshold adjustable per channel
trigger outputs common trigger output for all channels
outputs 16-bit counter parallel interface with overflow
test and calibration 1 digital in, 1 external capacitor and 1 internal capacitor
power consumption 210 mw (32 channel mode), 270 mw (64 channel mode)
about the product