A CMOS Self-Powered Front-End Architecture for Subcutaneous by Jordi Colomer-Farrarons, Pere MIRIBEL

By Jordi Colomer-Farrarons, Pere MIRIBEL

A CMOS Self-Powered Front-End structure for Subcutaneous Event-Detector units offers the notion and prototype consciousness of a Self-Powered structure for subcutaneous detector units. The structure is designed to paintings as a true/false (event detector) or threshold point alarm of a few components, ions, etc... which are detected via a three-electrodes amperometric BioSensor process. The equipment is envisaged as a Low-Power subcutaneous implantable program powered by way of an inductive hyperlink, one emitter antenna on the exterior aspect of the surface and the receiver antenna lower than the outside. The sensor is managed with a Potentiostat circuit after which, a post-processing unit detects the specified degrees and prompts the transmission through a backscattering approach via the inductive hyperlink. all of the instrumentation, other than the facility module, is applied within the so known as BioChip. Following the assumption of the powering hyperlink to reap power of the magnetic triggered hyperlink on the implanted machine, a Multi-Harvesting strength Chip (MHPC) has been additionally designed.

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Additional info for A CMOS Self-Powered Front-End Architecture for Subcutaneous Event-Detector Devices: Three-Electrodes Amperometric Biosensor Approach

Example text

EIS [106] is an AC method that describes the response of an electrochemical cell to a small amplitude sinusoidal voltage signal as a function of frequency. The resulting current sine wave differs in time (phase shift) with respect to the perturbing (voltage) wave, and the ratio V(t) / I(t) is defined as the impedance (Z), and accounts for the combined opposition of all the components within the electrochemical cell (resistors, capacitors, inductors) to the flow of electrons. In an electrochemical cell, electrode kinetics, Redox reactions, diffusion phenomena and molecular interactions at the electrode surface can be considered analogous to the above components that impede the flow of electrons in an ac circuit.

Are avoided. Some references are described in Choi Myung-suk et al [89] in their work “Implantable Bio system design for displacement measurement of living life” or in the work by K. Kitamori [90], where he described micro and nano chemical sensors on-a-chip. Other interesting Biosensors are the piezoelectric immunosensors, like the one developed for the rapid diagnosis of M. tuberculosis by Eric Carnes et al [92]. Several references related the use of ASIC designs and Biosensors are presented in [97, 98] and [99], which introduces a low power readout circuit with a potentiostat amplifier for amperometric chemical sensors in Glucose Meter Application.

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