| A Self Adjusting Delay Circuit for Pixel Readout Chips (2007) | |||||||||||||||
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| A simple concept for automatic adjustment of important VLSI--circuit properties was proposed in [1]. As an application, a self adjusting monoflop is reviewed, and detailed measurements are discussed regarding a possible implementation in the LHC 1 readout chip for the ATLAS--experiment [2]. 1 Introduction Semiconductor pixel detectors gain importance not only in particle physics but also in medical and biological applications. Due to the system requirements and modern submicron technologies the readout chips are getting more complex. Besides the preamplifier and comparator additional digital and analog components are implemented for example for trigger generation or data sparsification. Pixel detectors for the ATLAS--detector at the LHC collider at CERN contain more than 10 8 channels. In order to obtain an optimal performance the whole system has to be very uniform, e.g. all channels should behave exactly alike. In these complex cells however good matching is very difficult to achie... | |||||||||||||||
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