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 mm2, is supplied with 1.8 Volt and consumes 1.8 mW.
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References
Graichen, F., Arnold, R., Rohlmann, A., Bergmann, G.: Implantable 9-channel telemetry system for in vivo load measurements with orthopedic implants. IEEE Transactions on Biomedical Engineering 54, 253–261 (2007)
Liu, M., Hong, C., Zhang, X., Wang, Z.: Low-Power SoC Design for Ligament Balance Measuring System in Total Knee Arthroplasty. In: Proc. 33rd Annual Int. Conf. of the IEEE EMBS, pp. 5860–5863 (2011)
Arami, A., Miehlbradt, J., Aminian, K.: Accurate internal–external rotation measurement in total knee prostheses: A magnetic solution. Journal of Biomechanics 45, 2023–2027 (2012)
Säckinger, E., Guggenbühl, W.: A Versatile Block: The CMOS Differential Difference Amplifier. IEEE J. Solid-State Circuits sc-22(2), 287–294 (1987)
Baird, R., Fiez, T.: Linearity enhancement of multibit delta–sigma A/D and D/A converters using data weighted averaging. IEEE Trans. Circuits Syst. II 42, 753–762 (1995)
Ali, S., Tanner, S., Farine, P.-A.: A Background Calibration Method for DAC Mismatch Correction in Multibit Sigma-Delta Modulators. In: Proc. Int. Soc. Design Conf. (2012)
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© 2013 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Tanner, S. et al. (2013). An Analog Front-End and ADC Integrated Circuit for Implantable Force and Orientation Measurements in Joint Prosthesis. In: Godara, B., Nikita, K.S. (eds) Wireless Mobile Communication and Healthcare. MobiHealth 2012. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 61. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-37893-5_33
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DOI: https://doi.org/10.1007/978-3-642-37893-5_33
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-37892-8
Online ISBN: 978-3-642-37893-5
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