⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一款用于多模态生命体征健康贴片的电池供电单芯片SoC，集成了BLE通信，功耗仅769µW。通过数字辅助直流电流消除环路，在不依赖高精度ADC的情况下实现了高动态范围，解决了可穿戴健康监测中低功耗与高精度之间的矛盾。
Hyunsoo Ha1, Wim Sijbers2, Jiawei Xu1, Stefano Stanzione1, Chris van Liempd1, Dwaipayan Biswas2, Arjan Breeschoten1, Peter Vis1, Chris Van Hoof1,2,3, Nick Van Helleputte2 imec - Netherlands, Eindhoven, The Netherlands imec, Leuven, Belgium 3 KU Leuven, Heverlee, Belgium 1 To achieve a high effective DR without relying on >16b ADCs, a digitally assisted DC current-cancellation loop is used [4]. The DC component is cancelled with a 6b current DAC directly at the input of the readout, resulting in a 75μA maximum input current. The PPG readout channel consumes 121μW while achieving a 28pA rms input noise in 20Hz band and 111dB effective DR with a 13b SARADC (pulse frequency at 2kHz, 16× oversampling). Figure 22.1.3 shows a PPG waveform recorded using a finger sensor with infrared light and an SpO2 waveform derived from red and IR PPG during breath holding. In an HR detection only scenario the total LED power is reduced to 205μW because a 0.67% duty cycle is used which
Mario Konijnenburg1, Roland van Wegberg1, Shuang Song2,