Recode Then Lsb-First Sar Adc For Reducing Energy And Bit-Cycles
2018 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)(2018)
摘要
Least Significant Bit-first (LSB-first) algorithm is suitable for low-activity signals as it reduces DAC activity and the number of bit-cycles required per conversion. However, certain code transitions degrade performance by requiring large switching energy and number of bit-cycles even when the code change over previous code is small. This paper addresses it by a new algorithm called Recode then LSB-first (RLSB-first) that reduces the switching energy required for all cases of small code change across the full range of possible previous sample codes. The energy reduction is achieved while maintaining a low number of bit-cycles per conversion.
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关键词
ADC, DAC, LSB-first, BRL-first, RLSB-first, SAR
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