Interfacing Pressure Sensors to Microchip’s Analog Peripherals

In this application note we can get description about output, output signal, filter, input, sensor, transfer function, voltage, path, converter, filtering, implementation, application, precision voltage reference, signal, and sensor output. Many things regarding offset voltage, output voltage, temperature effect, instrumentation, sensing element, system, level, input range, application note, gain, analog signal, digital potentiometer, conversion, current excitation, and configuration are explained inside this application note.

This application note gives the reader info regarding temperature, bridge, amplifier circuit, reference voltage, common mode rejection, circuit, voltage reference, temperature sensing, supply, analog, op amp instrumentation, pressure, sensing, analog filter, and range. These are excerpted from the application note:

Pressure measurement devices can be classified into two groups: those where pressure is the only source of power and those that require electrical excitation. The mechanical style devices that are only excited by pressure, such as bellows, diaphragms, bourdons, tubes or manometers, are usually suitable for purely mechanical systems. With these devices a change in pressure will initiate a mechanical reaction, such as a change in the position of mechanical arm or the level of liquid in a tube. Electrically excited pressure sensors are most synergistic with the microcontroller environment. These style of sensors can be piezoresistive, Linear Variable Differential Transformers (LVDT), or capacitive sensors. Most typically, the piezoresistive sensor is used when measuring pressure

Also, the application note gives the reader info regarding piezoresistive pressure sensors, amplifier, barometric pressure, pressure sensor, microchip, element, low pass filter, technology, pressure range, noise, offset, pressure sensing, mode, instrumentation amplifier, and excitation.

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