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Electronics - Analog and Digital Converters

@ : Home > Electronics > Analog and Digital Converters > General Questions

Exercise

"Everyone is wise until he speaks."
- (Proverb)
1. 

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
2. 

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
3. 

A binary-weighted digital-to-analog converter has an input resistor of 100 komega.gif. If the resistor is connected to a 5 V source, the current through the resistor is:
A. 50 mu.gifA
B. 5 mA
C. 500 mu.gifA
D. 50 mA
4. 

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.
5. 

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

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