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《Microelectronics》 2016-01
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A New Mixed Switching Scheme for Capacitor Arrays of SAR ADC

NI Yabo;LIU Lu;XU Shiliu;Chongqing University;Science and Technology on Analog Integrated Circuit Laboratory;  
A high energy-efficiency mixed capacitor switching scheme was proposed for the successive approximation register analogue-to-digital converter(SAR ADC).A new switching method was combined with the monotonic switching method and split-capacitor technique.The proposed switching method achieved no switching energy consumption until the fourth comparison,and the low power monotonic switching method was utilized for the rest comparisons.Moreover,fewer bit capacitors were needed at the same resolution because of split-capacitor technique.The model simulation results showed that the proposed method achieved 99% reduction in switching energy when compared with the conventional SAR architecture.
【CateGory Index】: TN792
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