A Battery-Powered Wireless Ion Sensing System Consuming 5.5 nW of Average Power

• Published in: IEEE journal of solid-state circuits Vol. 53; no. 7; pp. 2043 - 2053
• Main Authors: Hui Wang, Xiaoyang Wang, Barfidokht, Abbas, Jiwoong Park, Wang, Joseph, Mercier, Patrick P.
• Format: Journal Article
• Language: English
• Published: IEEE 01.07.2018
• Subjects: <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">in vitro; Batteries; Biosensing; Electrodes; ion-selective electrodes (ISEs); Ions; near-zero power; power oscillator; reference-free SAR analog-to-digital converter; relaxation oscillator; Sensors; Sodium; ultra-low-power; Wireless communication; Wireless sensor networks

This paper presents a battery-powered wireless ion sensing platform featuring complete sensing-to-transmission functionality. A 1 mm × 1.2 mm chip fabricated in 65 nm includes a 406 pW potentiometric analog front end, a 780 pW 10-bit SAR ADC, a 2.4 GHz power-oscillator-based wireless transmitter tha...