Allen H V, Knutti J W, Meindl J D
Biotelem Patient Monit. 1979;6(3):147-59.
Data transmitters and power/source controllers are common elements in all totally implantable instrumentation systems. Two custom-designed integrated circuits have been developed for these elements and have significant impact on the realization of compact reliable telemetry packages. The first 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 second is a precision RF transmitter capable of operation up to 125 MHz in either FM or pulse-coded format and requires only two nonintegrated inductors. These IC systems are basic building blocks for a large number of totally implantable telemetry applications.
数据发射器和电源/源控制器是所有完全植入式仪器系统中的常见元件。针对这些元件开发了两种定制设计的集成电路，它们对实现紧凑可靠的遥测组件有重大影响。第一种是经过时间功率开关，它可以通过短射频脉冲串远程开启植入的电池供电系统；为防止电池意外耗尽，它将在预编程时间（1至5分钟）后自动关闭。第二种是精密射频发射器，能够以调频或脉冲编码格式在高达125兆赫兹的频率下运行，并且只需要两个非集成电感器。这些集成电路系统是大量完全植入式遥测应用的基本构建模块。
