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WorksheetsADC/DAC Quiz
Total questions: 25
Worksheet time: 13mins
Which of the following represents range of frequency measured by ADC?
None of the answers
Threshold Frequency
Peak Frequency
Bandwidth
Typical conversion speed of ADC is_______________.
Less than 100 microseconds
Less than 500 microseconds
Less than 1 microseconds
Greater than 1000 microseconds
Which of the following method is employed for ADC?
Successive approximation type
Ladder network
None of the answers
PWM type
Dynamic range of ADC is dependent on
Linearity
Resolution
All of the answers
Accuracy
Successive approximation is slow for large bit application
False
True
either True or False
None of the answer
Which of the following type output is provided by ADC?
Both serial and parallel type
None of the answers
Parallel type
Serial type
Small timing errors in ADC additional to noise is known as ________.
Aliasing
None of the answer
jitter
Super noise
Rotary encoder is an ADC.
False
True
Either True or False
None of the answers
Which of the following is an indication by setting time?
All of the answers
Precision in conversion
Accuracy of conversion
Speed of conversion
Dynamic range is expressed in __________________.
volts
Hz
Ampere
Decibel
Filling data between impulses in DAC is known as __________.
None of the answers
Interpolation
Reconstruction
Sampling
Which of the following is a binary weighted DAC?
Switched resistor DAC
R-2R ladder DAC
Sampling DAC
PWM DAC
Thermal noise is absent in DAC.
False
True
either True or False
None of the answers
Which of the following are used in DAC?
Ladder Network
Successive approximation technique
Both Ladder and successive approximation technique
None of the answers
Which of the following represents over sampling DAC?
Switched resistor DAC
Binary weighted DAC
PWM DAC
Delta sigma DAC
ADC conversion involves
Quantization
Simulation
Summation
Subtraction
ADC input is sampled
Nyquist Rate
Newton Rate
Ohm's Rate
Lens Rate
An ADC works by sampling the value of the input at
Discrete Interval
Continuous Interval
Exponential Interval
Determinant Interval
________ analog-to-digital converters (ADCs) use no clock signal, because there is no timing or sequencing required.
Actuator
Dual
Flash
Successive approximation
________ analog-to-digital converters (ADCs) have a fixed value of conversion time that is not dependent on the value of the analog input.
Flash
Dual
Recessive approximation
Successive approximation
The problems of the binary-weighted resistor digital-to-analog converter (DAC) can be overcome by using ___________.
an 8-bit binary-weighted resistor DAC
an R/2R ladder DAC
a staircase DAC
a flash DAC
Inaccurate analog-to-digital conversion may be due to ____________.
constant analog input voltage
linear ramp usage
intermittent counter inputs
faulty sample-and-hold circuitry
A binary-weighted resistor used in a digital-to-analog converter (DAC) is only practical up to a resolution of ________.
10 bits
2 bits
8 bits
4 bits
The flash method of analog-to-digital conversion (ADC) uses comparators that compare reference voltages with the analog input voltage.
A.TrueB.
True
False
None of the above
either True or False
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. B.C.D.
0.3125 V
3.125 V
0.78125 V
–3.125 V
