High-speed, low-power subranging ADCs

In this paper, the latest research results of high-speed, low-power subranging ADC technologies are presented. The offset cancelling charge steering amplifier realizes a low-power and high-precision comparator, resulting in a low-power subranging ADC without digital calibration. Moreover, the built-in threshold calibration combining offset drift compensation enables an extremely low-power subranging ADC that is equally matched for SAR ADCs.