Details

Autor(en) / Beteiligte

• Deepu, C. J.
• Xu, X. Y.
• Wong, D. L. T.
• Heng, C. H.
• Lian, Y.

Titel

A 2.3 \mu W ECG-On-Chip for Wireless Wearable Sensors

Ist Teil von

• IEEE transactions on circuits and systems. II, Express briefs, 2018-10, Vol.65 (10), p.1385-1389

Ort / Verlag

IEEE

Erscheinungsjahr

2018

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• This brief presents an ultra-low power single chip solution for electrocardiography (ECG) signal acquisition and processing in wearable ECG sensors. The chip contains a low noise preamplifier with embedded band-pass function, a programmable gain buffer, a 12-bit successive approximation ADC, a novel morphological filter based QRS detector, 8-Kb on-chip SRAM, a control unit and MCU interfaces. The chip was designed and implemented in 0.35-<inline-formula> <tex-math notation="LaTeX">{\mu }\text{m} </tex-math></inline-formula> standard CMOS process. The analog core operates from 0.8 V to 1.8 V, while the digital circuits and SRAM operate from 1.5 V to 3.6 V. The chip has a total core area of 5.74 mm 2 and consumes <inline-formula> <tex-math notation="LaTeX">2.3~{\mu }\text{W} </tex-math></inline-formula>. Small size and low power consumption make this chip suitable for usage in wearable ECG sensors. Apart from presenting the measurement results, we also successfully demonstrate a prototype wearable ECG device, for long term cardiac monitoring using the proposed ECG-on-chip.