期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2010.03.123
关键词
Current readout; XFEL; Trapezoidal weighting function; Time variant filter
In this paper we propose a novel architecture to implement the current readout of DePFET Active Pixel Sensor (APS) matrices to be used in experiments at the European X-ray Free Electron Laser (XFEL) The circuit performs a fast trapezoidal filtering of the DePFET signal with a very simple architecture based on a Flip Capacitor Filter solution We discuss the possible available trade-offs between noise and speed performances based on three different timing strategies that can be used to readout the DePFET matrix Simulation results are shown for a first design of the circuit and expected noise performances are discussed in the last part of the paper (C) 2010 Elsevier BV All rights reserved
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