Question
Download Solution PDFConsider the situation where a microprocessor gives an output of an 8-bit word. This is fed through an 8-bit digital-to-analog converter to a control valve. The control valve requires 6.0 V to be fully open. If the fully open state is indicated by 11111111, then what is the output to the valve for a change of 1 bit ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The resolution is defined as the smallest voltage change that can be measured by the DAC.
The reference voltage is the maximum value that the ADC can convert.
For an n-bit DAC, the resolution is expressed as
Calculation:
Reference voltage (Vref) = 6 V
number of bits = 8
The resolution is = 6/28 = 0.0234 V
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