Prototype of Ultra-Fast X-Ray Camera Controller working in a single photon counting mode and based on ASIC has been presented in this paper. An ASIC architecture has been discussed with special attention to digital part. We present the Custom Soft Processor as an ASIC control sequences generator. The Processor allows for dynamic program downloading and generating control sequences with up to 80MHz clock rate (preliminary results). Assembler with a very simple syntax has been defined to speed up Processor programs development. Discriminators threshold dispersion correction has been performed to confirm proper Camera Controller operation.
Hybrid pixel detectors working in a single photon counting mode are very attractive solutions for material science and
medical X-ray imaging applications. Readout electronics of these detectors has to match the geometry of pixel detectors
with an area of readout channel of 100 μm × 100 μm (or even less) and very small power consumption (a few tens of
μW). New solutions of readout ASICs are going into directions of better spatial resolutions, higher data throughput and
more advanced functionality. We report on the design and measurement results of two pixel prototype ASICs in
nanometer technology and 3D technology which offer fast signal processing, low noise performance and advanced
functionality per single readout pixel cell.