Manufacture of custom CMOS LSI for an implantable multipurpose biotelemetry system.

H. Seo, M. Esashi, T. Matsuo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Implantable biotelemetry systems are indispensable tools not only in animal research but also in clinical medicine as such systems enable the acquisition of otherwise unavailable physiological data. This paper describes the manufacture of custom CMOS LSI to implement an implantable biotelemetry system. The internal circuits of this system are fabricated on a single silicon chip with a size of 4 x 5 mm. This IC is designed and manufactured not only to achieve as small size and low power dissipation as possible, but also to have multiple functions. Its main functions are to select one of implanted sensors and to accomplish On-Off power switching of an implanted battery by receiving appropriate control signals and command signals from an external circuit. This system, used together with appropriate sensors, is expected to be capable of measuring and transmitting such significant parameters as pressure, pH and temperature.

Original languageEnglish
Pages (from-to)319-329
Number of pages11
JournalFrontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering
Issue number4
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Biophysics


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