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How do you find the sensitivity of ADC?
Sensitivity is an absolute quantity, the smallest absolute amount of change that can be detected by a measurement. Consider a measurement device that has a ±1.0 volt input range and ±4 counts of noise, if the A/D converter resolution is 212 the peak-to-peak sensitivity will be ±4 counts × (2 ÷ 4096) or ±1.9 mV p-p.
What is accuracy and sensitivity?
Accuracy is the proportion of true results, either true positive or true negative, in a population. It measures the degree of veracity of a diagnostic test on a condition. The numerical values of sensitivity represents the probability of a diagnostic test identifies patients who do in fact have the disease.
What do you mean by resolution sensitivity?
Resolution is the smallest reading difference that is possible in a given measuring instrument. Sensitivity on the other hand is the smallest amount of change in the measured parameter that causes a reading change equivalent to resolution of the equipment.
What kind of range does an ADC have?
Determine if your ADC is configured for a bipolar, or unipolar range; we’ll call this B. Your data logger has a bipolar range if it can measure signals both above and below zero. It has a unipolar range if can only measure signals that are either above or below zero, but not both at the same time.
Why do I need a higher resolution ADC?
Depending upon what you’re trying to do the higher resolution may be overkill, like measuring the length of your driveway. But it may come in handy for sizing up the miter joints of the dining room cabinet you’re building.
How is the resolution of a / D converter diminished?
Considering this noise, the 16 counts equal 4 bits (2 4 = 16); therefore the 16 bits of resolution specified for the measurement system is diminished by four bits, so the A/D converter actually resolves only 12 bits, not 16 bits. A technique called averaging can improve the resolution, but it sacrifices speed.
How is the sensitivity of a measurement determined?
Sensitivity is an absolute quantity, the smallest absolute amount of change that can be detected by a measurement. Consider a measurement device that has a ±1.0 volt input range and ±4 counts of noise, if the A/D converter resolution is 2 12 the peak-to-peak sensitivity will be ±4 counts × (2 ÷ 4096) or ±1.9 mV p-p.