Research Article
An Analog Front-End and ADC Integrated Circuit for Implantable Force and Orientation Measurements in Joint Prosthesis
@INPROCEEDINGS{10.1007/978-3-642-37893-5_33, author={Steve Tanner and Shafqat Ali and Mirjana Banjevic and Arash Arami and Kamiar Aminian and Willyan Hasenkamp and Arnaud Bertsch and Philippe Renaud and Pierre-Andr\^{e} Farine}, title={An Analog Front-End and ADC Integrated Circuit for Implantable Force and Orientation Measurements in Joint Prosthesis}, proceedings={Wireless Mobile Communication and Healthcare. Third International Conference, MobiHealth 2012, Paris, France, November 21-23, 2012, Revised Selected Papers}, proceedings_a={MOBIHEALTH}, year={2013}, month={4}, keywords={kinematics prosthesis strain gauge telemetry front-end integrated circuit ADC monitoring implantable electronic}, doi={10.1007/978-3-642-37893-5_33} }- Steve Tanner
Shafqat Ali
Mirjana Banjevic
Arash Arami
Kamiar Aminian
Willyan Hasenkamp
Arnaud Bertsch
Philippe Renaud
Pierre-André Farine
Year: 2013
An Analog Front-End and ADC Integrated Circuit for Implantable Force and Orientation Measurements in Joint Prosthesis
MOBIHEALTH
Springer
DOI: 10.1007/978-3-642-37893-5_33
Abstract
The paper presents an analogue front-end and ADC integrated circuit for processing signals of sensors implanted into joint prosthesis. The circuit is designed to be operated with Wheatstone bridge sensors, such as strain gauges, pressure, Hall Effect, magneto-resistive sensors, etc. It performs sensor supply multiplexing, sensor signal amplification with chopper modulation, offset compensation and 14-bit analog to digital conversion in a single chip. It can operate simultaneously up to eight sensors at an overall bandwidth of 8 kHz, and can be directly interfaced to a remotely powered RFID system in order to constitute a complete multi-sensor, low-power, small size and externally powered micro-system. Integrated into a 180 nm CMOS process, it measures 5 mm, is supplied with 1.8 Volt and consumes 1.8 mW.