A 12-bit Low-Power Multi-Channel Ramp ADC Using Digital DLL Techniques for High-Energy Physics and Biomedical Imaging
This paper presents the design of a low-power multichannel time-based analog-to-digital converter (ADC) for the instruments dedicated to high-energy physic experiments and biomedical imaging applications. The proposed ADC is realized by using two-step conversion scheme: the voltage-to-time conversion (VTC) and the digital-to-time conversion (TDC). In VTC, the classic Wilkinson-type architecture are adopted. Both the high-precise ramp generator and the high-resolution high-speed comparator are presented. In TDC, counterbased circuits and the time interpolation based on a digital delay-locked loop (DLL) are proposed. A eight-channel prototype has been designed in AMS 0.35 μm technology. The typical resolution of the ADC is 12 bits. The typical sampling rate is about 1 Msample/s while the clock is 100 MHz. The power dissipation is 3 mW + 0.8 mW/channel. This is the first report on the design of a time-based ADC using digital DLL with low power, multiple channels and high resolution for the application of particle detections.
Wu Gao DeyuanGao Tingcun Wei Chrinstine Hu-Guo Yann Hu
School of Computer, Northwestern Polytechnical University, Xian, 710072, China Institut Pluridiscip School of Computer, Northwestern Polytechnical University, Xian, 710072,China Institut Pluridisciplinaire Hubert Curien, UDS/CNRS/IN2P3,Strasbourg, 67037,France School of Computer, Northwestern Polytechnical University, Xian, 710072, China Institut Pluridiscip
国际会议
上海
英文
227-229
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）