J. Colomer-Farrarons, P. Miribel-Català, and J. Samitier (Spain)
Implantable Electronics, Potentiostat, In-Vivo Electronics, Biosensor.
An integrated front-end architecture for In-Vivo detection is presented. The system is designed as an Integrated Device to be implanted under the human skin. The power transmission and AM modulation data communication is achieved using an inductively coupled antenna (coil) of 5.5mm x 14.5mm working at 13.56MHz. The communication, on-chip voltages and sensor instrumentation blocks have been fabricated in 0.13µm tech. from STMicroelectronics. A supply current of 1.5mA @ +/- 1.2V is generated for a maximum distance of 13mm between coils. A potentiostat amplifier has been integrated to control an amperometric biosensor as well as a current sensing method based on a transimpedance amplifier is used to measure the current..
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