6. A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101.
(a) 0.3125 V
(b) 3.125 V
(c) 0.78125 V
(d) –3.125 V
7. What is the resolution of a digital-to-analog converter (DAC)?
(a) It is the comparison between the actual output of the converter and its expected output.
(b) It is the deviation between the ideal straight-line output and the actual output of the converter.
(c) It is the smallest analog output change that can occur as a result of an increment in the digital input.
(d) It is its ability to resolve between forward and reverse steps when sequenced over its entire range.
8. Which of the following is a type of error associated with digital-to-analog converters (DACs)?
(a) nonmonotonic error
(b) incorrect output codes
(c) offset error
(d) nonmonotonic and offset error
9. The practical use of binary-weighted digital-to-analog converters is limited to:
(a) R/2R ladder D/A converters
(b) 4-bit D/A converters
(c) 8-bit D/A converters
(d) op-amp comparators
10. A binary-weighted digital-to-analog converter has an input resistor of 100 k. If the resistor is connected to a 5 V source, the current through the resistor is:
(a) 50 A
(b) 5 mA
(c) 500 A
(d) 50 mA
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55555555556. A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 0101. (a) 0.3125 V (b) 3.125 V (c) 0.78125 V (d) –3.125 V- 555555555525. The characteristic that a change of one binary step on the input of a digital-to-analog converter (DAC) should cause exactly one step change on the output is called ________. (a) resolution (b) monotonicity (c) linearity (d) accuracy
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- 555555555524. A binary-weighted resistor used in a digital-to-analog converter (DAC) is only practical up to a resolution of ________. (a) 10 bits (b) 2 bits (c) 8 bits (d) 4 bits