Medical Pioneer - ST
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National Semiconductor provides reference designs and system level solutions   For medical devices, accuracy is the most important indicator of their strengths and weaknesses. Because such equipment is life-threatening, the slightest error is not only a thousand miles, but also a paralysis of life.
   The reliability of the equipment needs to be considered from three levels: one is the device level. At this level, the engineer needs to consider selecting stable and reliable electronic components. The second is the subsystem. At this level, the engineers pay attention to the special functions. Module development. At this time, the characteristic IC (integrated circuit) selected by the engineer must be matched with the entire functional module in addition to its own stability to ensure the stability and accuracy of the subsystem. The third is the system level. At this level, the engineer needs to have “ the bigger picture ", so that a reasonable trade-off, in order to ensure that the equipment is" accuracy "not because some" features "and sacrifice.
   Portable medical devices present new challenges to the accuracy of the device while giving patients freedom of movement. Medical devices use a variety of different sensors to monitor the health of the patient, and then the sensor converts the physiological signals into electrical signals for analysis by the electronic device. Signal path design is particularly important for portable medical devices because the signals transmitted in medical devices are relatively weak and subject to interference from many sources of noise. For example, the very weak current output from the sensor must pass through a high-precision amplifier to separate the weak effective signal from the background noise.
   Nowadays, the green trend of the electronics industry has penetrated into every corner, and the field of medical equipment is no exception. Energy efficiency is becoming a new indicator of the success of medical device design. The so-called energy efficiency ( referred to as energy efficiency ) , the usual expression is the performance of Wattby. For medical devices, the highest accuracy is achieved for each watt of power. In the field of portable medical devices, the importance of “ energy efficiency †is self-evident, it is not only about the accuracy of diagnosis and treatment, but also about “ portable †.
   For designers, on the one hand, low-power, small package, high-integration IC , on the other hand, choose a reasonable power management architecture. Current high efficiency switching and linear regulators offer large output currents, a wide output voltage range, and high frequency, eliminating the need for external compensation circuitry and allowing the use of smaller external passive components. The smaller the passive components used, the smaller the board area required and the smaller the product shape.
   The medical device market has always been an important area of ​​research and attention of National Semiconductor. In addition to providing a series of rigorously tested, compact, energy-efficient chips, we also provide system design engineers with many design references and system-level solutions to ensure design. The division can use this to design a more accurate " Noah's Boat " .
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