28.5 A 0.6V 0.015mm2 time-based biomedical readout for ambulatory applications in 40nm CMOS
| Autor: | Georges Gielen, Refet Firat Yazicioglu, Samira Zaliasl, Nick Van Helleputte, Rachit Mohan, Chris Van Hoof |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
Offset (computer science) business.industry Dynamic range 020208 electrical & electronic engineering Transistor Electrical engineering 02 engineering and technology 021001 nanoscience & nanotechnology Time based law.invention CMOS law 0202 electrical engineering electronic engineering information engineering Operational amplifier Electronic engineering 0210 nano-technology business Frequency modulation Voltage |
| Zdroj: | ISSCC |
| DOI: | 10.1109/isscc.2016.7418117 |
| Popis: | Emerging applications in personal healthcare require sensor SoCs with low area, low power and a high dynamic range. Design in small-scale technologies can reduce the power and area of digital processing. However, due to the accompanied reduced supply voltage (VDD), the analog front-end (AFE) faces significant challenges in maintaining a large dynamic range in a power- and area-efficient manner [1–3]. A large dynamic range is important to handle the large signals expected during motion [1]. In this paper, we demonstrate a 0.6V ECG readout in 40nm technology for ambulatory applications. It can handle up to 40mVpp AC-signal and up to 300mV DC-electrode offset while consuming 3.3µW power and 0.015mm2 area. These results are achieved by implementing a time-domain-based readout architecture that focuses on scalable design techniques and especially avoids high-gain opamps and large passives. The AFE achieves more than 5× increase in AC dynamic range compared with previous work with similar silicon area and similar VDD [2], without compromising on the power consumption (see Fig. 28.5.6). |
| Databáze: | OpenAIRE |
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