Abstract-We describe a high-rate energy-resolving photoncounting ASIC aimed for spectral computed tomography. The chip has 160 channels and 8 energy bins per channel. It demonstrates a noise level of ENC=214 electrons at 5pF input load at a power consumption of <5mW/channel. Maximum count rate is 17Mcps at a peak time of 40ns, made possible through a new filter reset scheme, and maximum read-out frame rate is 37kframe/s.
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