Ultra-low-power variable-resolution successive approximation ADC for biomedical application |
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Authors: | Le H.P. Singh J. Hiremath L. Mallapur V. Stojcevski A. |
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Affiliation: | Centre of Telecommun. & Microelectron., Victoria Univ., Melbourne, Vic., Australia; |
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Abstract: | An ultra-low-power variable-resolution successive approximation analogue-to-digital converter (ADC) is presented. A novel binary search algorithm architecture is proposed to replace the conventional digital-to-analogue converter to significantly reduce system area and power consumption. The proposed ADC consumes less than 22.2 /spl mu/W of power at a conventional 2 V battery supply with a sampling rate of 200 samples/s, and standby power consumption of less than 1 /spl mu/W. |
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