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《Journal of Fudan University(Natural Science)》 2018-02
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A 4 M-Pixel/s 4-Channel X-ray CCD Readout Circuit

YU Qian;WANG Kerou;YI Ting;LU Bo;CHEN Yong;HONG Zhiliang;State Key Lab of ASIC & System,Fudan University;Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences;  
This paper designs a 4 M-pixel/s 4-channel X-ray CCD readout circuit.In each channel,there are two modulators work alternatively to speed up the readout rate.Using modulator structure containing shifted loop delay(SLD)makes it easier to realize the required conversion speed.In order to achieve the required data processing speed and obtain the smaller filter area,the structure of the down sampling filter is carefully optimized.The 4-channel X-ray CCD readout system based on the incrementalΣΔconverter is implemented using the 2 P4 M0.35μm process.The circuit works under supply voltage of 3.3 Vand clock frequency of 64 MHz.The post-simulation results show that its equivalent input-referred noise is 13.53μV and the integral nonlinearity is 0.009 6%.The whole system's power consumption is 1.35 W.
【CateGory Index】: TN386.5
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