1) In ADC 0809 acting as a CMOS device, how many analog inputs & channel multiplexers are present?
a. 2
b. 4
c. 8
d. 16
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Answer
Explanation
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ANSWER: 8
Explanation:
No explanation is available for this question!
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2) In ADCs, it is possible to reduce the quantization error by _______the number of bits.
a. Increasing
b. Decreasing
c. Maintaining consistency in
d. All of the above
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Answer
Explanation
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ANSWER: Increasing
Explanation:
No explanation is available for this question!
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3) In dual slope type of ADCs, an input hold time is _______.
a. Almost zero
b. Higher than that of flash type ADCs
c. Longest
d. All of the above
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Answer
Explanation
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ANSWER: Higher than that of flash type ADCs
Explanation:
No explanation is available for this question!
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4) Which among the following types of ADCs require/s the shortest conversion time?
a. Flash type
b. Successive Approximation
c. Dual Slope
d. All of the above
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Answer
Explanation
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ANSWER: Flash type
Explanation:
No explanation is available for this question!
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5) In DACs, gain error occurs due to _________.
a. offset voltages of op-amps
b. leakage current in the switches
c. error in feedback resistor value
d. error in current source resistance values
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Answer
Explanation
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ANSWER: error in feedback resistor value
Explanation:
No explanation is available for this question!
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6) Offset error is basically defined as the non-zero level of analog output especially when all the digital inputs are ____.
a. 0
b. 1
c. Both a and b
d. None of the above
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Answer
Explanation
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ANSWER: 0
Explanation:
No explanation is available for this question!
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7) In DACs, which type of error/s specify/ies the amount by which the actual output of DAC differ from ideal straight line transfer characteristics?
a. Linearity error
b. Offset error
c. Gain error
d. All of the above
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Answer
Explanation
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ANSWER: Linearity error
Explanation:
No explanation is available for this question!
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8) Which among the following characteristics of D/A converter occur/s due to resistor and semiconductor aging?
a. Speed
b. Settling time
c. Long term drift
d. Supply rejection
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Answer
Explanation
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ANSWER: Long term drift
Explanation:
No explanation is available for this question!
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9) In DAC, resolution increases with the _________ in number of bits.
a. Increase
b. Decrease
c. Constant
d. None of the above
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Answer
Explanation
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ANSWER: Increase
Explanation:
No explanation is available for this question!
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10) In weighted resistor DAC, how many resistor/s per bit is/are required?
a. One
b. Two
c. Three
d. Four
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Answer
Explanation
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ANSWER: One
Explanation:
No explanation is available for this question!
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