关键词：生物信号；生物传感器；压缩传感；芯片
摘 要：This report presents a compressed sensing front-end for bio-signal applications that dynamically adjusts the compression factor, and increases the accuracy of reconstruction by removing noise with spike detection. This report includes the design and simulation of a low power differential ADC and the analysis of the proposed compressed sensing DSP with a 32 nm CMOS process. The DSP is estimated to consume 0.525 W at VDD = 0.4 V. The ADC uses the SAR architecture with a hybrid capacitive array with floating voltage shield, a Strongarm comparator, and digital SAR logic. The ADC consumes 9.8 nW at VDD = 1.05V and has 9.7-bits of resolution running at 20 kHz. Significant power savings are possible with compressed sensing and its influence will be key in driving the revolution of wearable sensors and medical monitoring.