How to Condition an Analog Signal

How to Condition an Analog Signal - How to Condition an...

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How to Condition an Analog Signal. .. An analog-to-digital converter (abbreviated ADC, A/D or A to D) is a device which converts continuous analog signals to discrete digital numbers. Due to the finite resolution and the unavoidable imperfections in all types of an ADC, input values have distortions which we call "noise". Most systems have an abundance of electrical noise. Electrical noise is radiated from building lights, nearby electrical motors, radio stations, and the sun. Electrical noise is generated on your circuit board from switching power regulators, oscillator chips, and switching digital signals. Further, since the conversions are directly related to a reference voltage, any deviation in the board voltage (even from jitter in the clock), can manifest itself by the sampled values "dancing around" when the analog signal being converted supposedly isn't changing. Various methods are used in discrete systems to eliminate noise and smooth out input data, including using a low-pass filter, watching for data to move outside a bound or threshold, and/or averaging of data. Of times, a combination of methods is needed to
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This document was uploaded on 02/08/2012.

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How to Condition an Analog Signal - How to Condition an...

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