INTRODUCTION TO MICROPEOCESSOR
MICROCOMPUTER SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Full-Scale Output
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Resolution
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Step-Size
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Time Out
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Detailed explanation-1: -The resolution is the smallest possible change in output voltage. For a 12-bit DAC the resolution is 1/(212), or 1/4096, of the full-scale output range. This smallest change results from an increase or decrease of 1 in the D/A code, so this change is referred to as 1 least significant bit (1 LSB).
Detailed explanation-2: -The resolution defines the smallest voltage change that can be measured by the ADC. As mentioned earlier, the resolution is the same as the smallest step size, and can be calculated by dividing the reference voltage by the number of possible conversion values.
Detailed explanation-3: -First, resolution or step size defines the smallest voltage or current change possible for the DAC output signal. For example, an 8-bit DAC that generates a maximum output voltage of 5 volts has a step size or resolution of (5V / 2 8 ) = 19.5 mV. Sometimes, the resolution is stated in the percentage value.