Design of a 12-Bit 2.5 MS/s Integrated Multi-Channel Single-Ramp Analog-to-Digital Converter for Imaging Detector Systems

@article{Gao2011DesignOA,
  title={Design of a 12-Bit 2.5 MS/s Integrated Multi-Channel Single-Ramp Analog-to-Digital Converter for Imaging Detector Systems},
  author={Wu Gao and Deyuan Gao and Christine Hu-Guo and Yann Hu},
  journal={IEEE Transactions on Instrumentation and Measurement},
  year={2011},
  volume={60},
  pages={1942-1951}
}
This paper presents a novel design of a 12-bit multi-channel single-ramp analog-to-digital converter (ADC) for imaging detector systems. To overcome the problem of long conversion time in the classic Wilkinson ADC, a new architecture using a counter and delay line interpolations is proposed. Two 5-bit Gray counters are designed for the coarse conversion. The time interpolation using an array of five delay-locked loops (DLLs) and the multiphase sampling technique are proposed for the fine… CONTINUE READING

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