A counter-ramp ADC uses a comparator to compare the input voltage with ________.

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Question
A counter-ramp ADC uses a comparator to compare the input voltage with ________.
Options
A. a binary number
B. the output of a counter
C. the output of a DAC
D. a voltage divider network

Correct Answer

the output of a DAC

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3. On a binary-weighted D/A converter the least significant binary input ________.
Options
A. connects to the smallest resistor
B. supplies the least voltage
C. connects to a 1 kΩ resistor
D. connects to the largest resistor

4. The characteristic that a change of one binary step on the input of a DAC should cause exactly one step change on the output is called ________.
Options
A. resolution
B. linearity
C. monotonicity
D. accuracy

6. A counter-ramp ADC stops counting when ________.
Options
A. the input voltage equals the DAC staircase voltage
B. the counter reaches a maximum count
C. the input voltage equals 5 volts
D. the DAC staircase voltage equals 5 volts

7. The main advantage of the tracking A/D converter over the stairstep-ramp A/D converter is that ________.
Options
A. it does not require a counter
B. it uses an up/down counter to indicate the polarity of the input voltage
C. it uses an up/down counter to measure both positive and negative voltages
D. it is faster

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