Publication

An Analog Front-End and ADC Integrated Circuit for Implantable Force and Orientation Measurements in Joint Prosthesis

Steve Tanner
2013
Conference Papers

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.

Official source

https://infoscience.epfl.ch/entities/publication/cd7b2ad4-8440-4d33-8e02-2ebc9756e7a7

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Steve Tanner
2013
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/cd7b2ad4-8440-4d33-8e02-2ebc9756e7a7

About this result

Related concepts (32)

Analog-to-digital converter

In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal. An ADC may also provide an isolated measurement such as an electronic device that converts an analog input voltage or current to a digital number representing the magnitude of the voltage or current. Typically the digital output is a two's complement binary number that is proportional to the input, but there are other possibilities.

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