Digital pixel readout integrated circuit architectures for LWIR
نویسندگان
چکیده
This paper presents and discusses digital pixel readout integrated circuit architectures for long wavelength infrared (LWIR) in CMOS technology. Presented architectures are designed for scanning and staring arrays type detectors respectively. For scanning arrays, digital time delay integration (TDI) is implemented on 8 pixels with sampling rate up to 3 using CMOS 180nm technology. Input referred noise of ROIC is below 750 rms electron meanwhile power dissipation is appreciably under 30mW. ROIC design is optimized to perform at room as well as cryogenic temperatures. For staring type arrays, a digital pixel architecture relying on coarse quantization with pulse frequency modulation (PFM) and novel approach of extended integration is presented. . It can achieve extreme charge handling capacity of 2.04Ge with 20 bit output resolution and power dissipation below 350 nW in CMOS 90nm technology. Efficient mechanism of measuring the time to estimate the remaining charge on integration capacitor in order to achieve low SNR has employed.
منابع مشابه
Design of a ROIC for Scanning Type HgCdTe LWIR Focal Plane Arrays
Design of a silicon readout integrated circuit (ROIC) for LWIR HgCdTe Focal Plane is presented. ROIC incorporates time delay integration (TDI) functionality over seven elements with a supersampling rate of three, increasing SNR and the spatial resolution. Novelty of this topology is inside TDI stage; integration of charges in TDI stage implemented in current domain by using switched current str...
متن کاملGallium Arsenide - Based Readout Electronics
The readout of detector arrays requires the monolithic or hybrid integration of a integrate circuit multiplexer with the detector array. In most LWIR and VLWIR applications, a hybrid approach is used. For example, the detector array may be built from HgCdTe and the readout integrated circuit may be silicon CMOS [1]. The two integrated circuits are mated through a bump-bonding process in which e...
متن کاملCMOS, Delta-Sigma pH-to-Digital Converter as New Integrated Device for Potentiometric Biosensors Applications
The explosive growth in the healthcare and lifestyle application has fueled recent research efforts to increase both integration and adaptability in biosensor readout design. Potentiometric sensor is emerging as important sensing devices in the areas of biomedical applications since the pioneer work on pH sensor has been introduced (Bergveld, 1970). It has appreciable advantages over traditiona...
متن کاملFERMI - A digital Front End Readout Micro-system for Calorimetric detectors at LHC
The activities within the FERMI Collaboration were completed by the successful assembly of multi-chip module demonstrators fulfilling the technical requirements of the LHC generation of high performance detectors like CMS ECAL. Throughout the project, the Collaboration has been concentrating on providing architectures that fulfil the requirements set by the interested experiments in the domain ...
متن کاملFast Readout Architectures for Large Arrays of Digital Pixels: Examples and Applications
Modern pixel detectors, particularly those designed and constructed for applications and experiments for high-energy physics, are commonly built implementing general readout architectures, not specifically optimized in terms of speed. High-energy physics experiments use bidimensional matrices of sensitive elements located on a silicon die. Sensors are read out via other integrated circuits bump...
متن کامل