Abstract
We present the first concept for the analog front-end of the readout ASIC for the XIDer (X-ray Integrating Detector) detector system which is beingdeveloped by a collaboration between the ESRF and Heidelberg University. The ESRF's Extremely Brilliant Source (EBS) upgrade which has been completed recently provides X-ray beams of unprecedentedquality, requiring new photon detection instruments. The XIDer project has been launched to developa new versatile pixel detector which will be tailored to match requirements imposed by this upgrade. The core challengesinclude fast signal acquisition, large dynamic range and single photon sensitivity. A firstprototype ASIC for the analog front-end of a single pixel has been manufactured. It is based on a pipelined two-stage charge removal circuit which digitizes the incident signal on the fly. We will present measurement results of the first test chip and concepts for the final system-on-chip implementation integrating several tens of thousands of pixels.
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