Abstract
The paper presents a design of CMOS Pixel Sensor (CPS) using the vertical integration technology (3DIT), expected to alleviate the most essential limitations of 2D-CPS. Our objective is to develop an intelligent architecture in order to meet the requirements of the innermost layer of the International Linear Collider (ILC) vertex detectors, which are particularly demanding in spatial resolution of less than 3 μm and associated frame readout time of 10 μs. The sensor, with a pixel pitch of 23 μm, will be composed of 3-tiers Integrated Circuits (IC) with different functionalities: detection with in pixel analogue processing, pixel-level 3-bit Analogue to Digital Conversion (ADC) and fast parallel sparse readout.
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