Instrumentation & test
Medical equipment for therapy and diagnostics are very often complex computer-controlled, electro-mechanical systems that rely on advanced semiconductor technologies and components to help deliver healthcare in hospitals and doctor offices as well as in homes. In addition to being able to measure vital signs and other readings, today's medical and healthcare devices must be able to deliver the high power required to supply magnetic resonance imagery or generate the precise high-voltage high-frequency pulses found in ultrasound equipment.
Achieving precision analog to digital conversion in test and measurement applications
Instrumentation systems take the raw sensor data, amplify it, condition the signals to remove unwanted artefacts, and then analog to digital converters process the data ready for digital control systems. To achieve conversion accuracy, signal conditioning circuits must keep any system-generated errors to an absolute minimum since it can generate false or inaccurate sensor operations and readings.
This article delves into instrumentation and test applications used for industrial applications. We explain the analog to digital conversion process and some of the sources of noise that can impact the accuracy of conversion, including noise from the power supply. Power protection using a programmable electronic fuse is also discussed.
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