题目/Title：A Fully Integrated SoC for Smart Capsule Providing In-Body Continuous pH and Temperature Monitoring

作者/Author：刘恒,姜汉钧,夏靖沛,池哲翔,李福乐,王志华
                        Heng Liu,Hanjun Jiang,Jingpei Xia,Zhexiang Chi,Fule Li,Zhihua Wang

期刊/Journal：Journal of Semiconductor Technology and Science

年份/Issue Date：2016Oct.

卷（期）及页码/Volume（No.）&pages：Vol.16, No.5, pp. 542 - 549

摘要/Abstract：
This paper presents a SoC (System-on-a-Chip) dedicated for a single-chip smart capsule which can be used to continuously monitor human alimentary canal pH and temperature values. The SoC is composed of the pH and temperature sensor interface circuit, a wireless transceiver, the power management circuit and the flow control logic. Fabricated in 0.18μm standard CMOS technology, the SoC occupies a die area of ~9mm2. The SoC consumes 6.15mW from a 3V power supply, guaranteeing the smart capsule battery life is no less than 24 hours when using 50mAh coin batteries. The experimental results show that measurement accuracy of the smart capsule is ±0.1 pH and ±0.2°C for pH and temperature sensing, respectively, which meets the requirement of in-body pH and temperature monitoring in clinical practice.