Jiawei Xu, P. Harpe, J. Pettine, C. Hoof, R. Yazicioglu
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引用次数: 30
摘要
本文介绍了一种用于生物阻抗谱、心电和呼吸记录的低功耗ASIC。该ASIC包括一个带伪随机二进制序列的宽带激励电流源、一个低噪声仪表放大器和一个低功耗12b SAR ADC。该ASIC能够以0.1Ω分辨率测量从1Ω到10kΩ的生物阻抗，覆盖频率范围高达125kHz。此外，ASIC可以同时记录心电和呼吸，仅消耗31μW的1.8V电源。
A low power configurable bio-impedance spectroscopy (BIS) ASIC with simultaneous ECG and respiration recording functionality
This paper presents a power-efficient ASIC for bio-impedance spectroscopy, as well as ECG and respiration recording. The ASIC includes a wideband stimulation current source with a pseudo-random binary sequence, a low-noise instrumentation amplifier, and a low power 12b SAR ADC. This ASIC is able to measure bio-impedances from 1Ω to 10kΩ with 0.1Ω resolution, and covers a frequency range up to 125kHz. Furthermore, the ASIC can simultaneously record ECG and respiration while consuming only 31μW from a 1.8V supply.
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