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J. Low Power Electron. Appl. 2018, 8(1), 3; doi:10.3390/jlpea8010003

Design of a Programmable Passive SoC for Biomedical Applications Using RFID ISO 15693/NFC5 Interface

1
Institute for Applied Research, University of Applied Sciences Offenburg, Offenburg 77652, Germany
2
Department of Microsystems Engineering, University of Freiburg, Freiburg 79098, Germany
3
Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-vom-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
*
Author to whom correspondence should be addressed.
Received: 19 December 2017 / Revised: 23 January 2018 / Accepted: 24 January 2018 / Published: 31 January 2018
(This article belongs to the Special Issue Low-Power Electronic Circuits for Monolithic Smart Wireless Sensors)
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Abstract

Low power, low cost inductively powered passive biotelemetry system involving fully customized RFID/NFC interface base SoC has gained popularity in the last decades. However, most of the SoCs developed are application specific and lacks either on-chip computational or sensor readout capability. In this paper, we present design details of a programmable passive SoC in compliance with ISO 15693/NFC5 standard for biomedical applications. The integrated system consists of a 32-bit microcontroller, a sensor readout circuit, a 12-bit SAR type ADC, 16 kB RAM, 16 kB ROM and other digital peripherals. The design is implemented in a 0.18 μ m CMOS technology and used a die area of 1.52 mm × 3.24 mm. The simulated maximum power consumption of the analog block is 592 μ W. The number of external components required by the SoC is limited to an external memory device, sensors, antenna and some passive components. The external memory device contains the application specific firmware. Based on the application, the firmware can be modified accordingly. The SoC design is suitable for medical implants to measure physiological parameters like temperature, pressure or ECG. As an application example, the authors have proposed a bioimplant to measure arterial blood pressure for patients suffering from Peripheral Artery Disease (PAD). View Full-Text
Keywords: RFID (radio frequency identification); NFC (near field communication); sensor readout; ADC (analog to digital converter); microcontroller; passive; biotelemetry RFID (radio frequency identification); NFC (near field communication); sensor readout; ADC (analog to digital converter); microcontroller; passive; biotelemetry
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Bhattacharyya, M.; Gruenwald, W.; Jansen, D.; Reindl, L.; Aghassi-Hagmann, J. Design of a Programmable Passive SoC for Biomedical Applications Using RFID ISO 15693/NFC5 Interface. J. Low Power Electron. Appl. 2018, 8, 3.

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