INTEGRATED POWER CONTROLLERS AND RF DATA TRANSMITTERS FOR TOTALLY IMPLANTABLE TELEMETRY

  • 1 January 1979
    • journal article
    • research article
    • Vol. 6  (3) , 147-159
Abstract
Data transmitters and power/source controllers are common elements in all totally implantable instrumentation systems. Two custom-designed integrated circuits [IC] were developed for these elements and have significant impact on the realization of compact reliable telemetry packages. The 1st is an elapsed-time power switch that can remotely turn on implanted battery-powered systems with a short RF burst; to prevent accidental battery drainage, it will automatically turn off after a preprogrammed time (1-5 min). The 2nd is a precision RF transmitter capable of operation up to 125 MHz in either FM or pulse-coded format and requires only 2 nonintegrated inductors. These IC systems are basic building blocks for a large number of totally implantable telemetry applications.

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