This paper presents a single channel, low power 6-bit 410-MS/s asynchronous successive approximation register analog-to-digital converter （SAR ADC） for ultrawide bandwidth （UWB） communication, prototyped in a SMIC...This paper presents a single channel, low power 6-bit 410-MS/s asynchronous successive approximation register analog-to-digital converter （SAR ADC） for ultrawide bandwidth （UWB） communication, prototyped in a SMIC 65-nm process. Based on the 3 bits/stage structure, resistive DAC, and the modified asynchronous successive approximation register control logic, the proposed ADC attains a peak spurious-free dynamic range （SFDR） of 41.95 dB, and a signal-to-noise and distortion ratio （SNDR） of 28.52 dB for 370 MS/s. At the sampling rate of 410 MS/s, this design still performs well with a 40.71-dB SFDR and 30.02-dB SNDR. A four-input dynamic comparator is designed so as to decrease the power consumption. The measurement results indicate that this SAR ADC consumes 2.03 mW, corresponding to a figure of merit of 189.17 fJ/step at 410 MS/s.展开更多
基金Project supported by the National Science Foundation for Young Scientists of China(No.61306029)the National High Technology Research and Development Program of China(No.2013AA014103)
文摘This paper presents a single channel, low power 6-bit 410-MS/s asynchronous successive approximation register analog-to-digital converter （SAR ADC） for ultrawide bandwidth （UWB） communication, prototyped in a SMIC 65-nm process. Based on the 3 bits/stage structure, resistive DAC, and the modified asynchronous successive approximation register control logic, the proposed ADC attains a peak spurious-free dynamic range （SFDR） of 41.95 dB, and a signal-to-noise and distortion ratio （SNDR） of 28.52 dB for 370 MS/s. At the sampling rate of 410 MS/s, this design still performs well with a 40.71-dB SFDR and 30.02-dB SNDR. A four-input dynamic comparator is designed so as to decrease the power consumption. The measurement results indicate that this SAR ADC consumes 2.03 mW, corresponding to a figure of merit of 189.17 fJ/step at 410 MS/s.
