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This paper presents the design and characteristics of a front-end readout application-specific integrated circuit (ASIC) dedicated to a multichannel-plate photodetector coupled to LYSO scintillating crystals. In our configuration, the crystals are oriented in the axial direction readout on both sides by individual photodetector channels allowing the spatial(More)
This paper presents the design of a wide-range multi-channel time-to-digital converter (TDC) for high-energy physics and biomedical imaging applications. The TDC architecture is based on coarse-fine two-level conversion scheme. Double 10-bit gray counters are designed for coarse conversion while a multiphase sampling technology based on array of(More)
This paper presents the design techniques of a monolithic multichannel front-end readout chip integrated with both high-accuracy TDC and high-resolution ADC for the PET using LYSO(Ce) crystals read out by MCP PMT at both ends. In the front-end readout chain, a regulated cascade (RGC) preamplifier is employed in every channel for amplifying the current(More)
This paper presents the design of a high accuracy multichannel peak detect and hold (PDH) circuit. This PDH measures the energy of an event and is one part of a readout chain for avalanche photo diodes (APD)-based positron emission tomography (PET) imaging. The circuit is designed in a 0.35μm CMOS process. The proposed PDH is dedicated to ultra low(More)
This paper presents the design of a low-power multi-channel time-based analog-to-digital converter (ADC) for the instruments dedicated to high-energy physic experiments and biomedical imaging applications. The proposed ADC is realized by using two-step conversion scheme: the voltage-to-time conversion (VTC) and the digital-to-time conversion (TDC). In VTC,(More)