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Gate leakage of charge sensitive amplifier (CSA) in deep submicron process not only increases noise but also impacts the DC voltage of preamplifier output. This paper proposes a CSA for CdZnTe particle detector readout implemented in 0.18μm CMOS process including its new reset and leakage compensation configuration which has low noise and short reset time, especially, is adjustable to fit...
The Krummenacher feedback circuit is a well know and often used in charge sensitive amplifiers (CSA) connected to DC-coupled semiconductor detectors. The circuit provides in a very simple structure dual functionality: continuous reset and detector leakage current compensation. In spite of the simplicity the characterization of the circuit for high speed applications is not very straightforward. This...
This paper presents the design of a low-noise multi-channel front-end readout chip integrated with a high-resolution TDC. It is foreseen to be used as front-end readout electronics of Avalanche Photo Diodes (APD) dedicated to a small animal Positron Emission Tomography (PET) system. The architecture of the chip is depicted. Two prototype chips, a ten-channel front-end chip and a three-channel high-resolution...
This paper presents initial results from electrical, spectroscopic and ion beam induced charge (IBIC) characterisation of a novel silicon PIN detector, featuring an on-chip n -channel JFET and matched feedback capacitor integrated on its p-side (frontside). This structure reduces electronic noise by minimising stray capacitance and enables highly efficient optical coupling between the detector back-side...
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