Design of an ultra-low power SAR ADC for biomedical applications
Design of an ultra-low power SAR ADC for biomedical applications
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适用于生物医学应用的超低功耗 SAR ADC 设计
DOI：
10.1109/icsict.2010.5667670
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Zhiliang Hong
中科院分区：
文献类型：
--
作者：
Hui Zhang;Yajie Qin;Siyu Yang;Zhiliang Hong
提出了一种超低功耗12位2kS/s逐次逼近型模数转换器（SAR ADC）。为了实现功耗优化，降低数字部分的电源电压，并自校准锁存器的失调电压。以低噪声为目标，提出了一种低反冲噪声锁存器。该芯片采用0.18µm 1 P6 M CMOS工艺制造。该ADC的SNDR为61.8dB，功耗仅为455 nW，品质因数（FOM）为220 fJ/转换步长。ADC内核的有效面积为674×639µm2。
In this paper, an ultra-low power 12-bit 2kS/s successive approximation register (SAR) analog-to-digital converter (ADC) is presented. For power optimization, the voltage supply of the digital part is lowered, and the offset voltage of the latch is self-calibrated. Targeted for lower noise, a low kick-back noise latch is proposed. The chip was fabricated using 0.18µm 1P6M CMOS technology. The ADC achieves SNDR of 61.8dB and dissipates only 455nW, resulting in a figure of merit (FOM) of 220fJ/conversion-step. The ADC core occupies an active area of 674×639µm2.