1
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
The number of comparators in 4-bit flash ADC is
A
4
B
5
C
15
D
16
2
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
The resolution of a 4-bit counting ADC is 0.5 Volts. For an analog input of 6.6 Volts, the digital output of the ADC will be
A
1011
B
1101
C
1100
D
1110
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The advantage of using a dual slope ADC in a digital voltmeter is that
A
its conversion time is small
B
its accuracy is high
C
it gives output in BCD format
D
it does not require a comparator.
4
GATE ECE 1998
Subjective
+1
-0
For an ADC, match the following : if
List 1
A. Flash converter
B. Dual slope converter
C. Successive approximation Converter

List 2
1. requires a conversion time of the order of a few seconds
2. requires a digital- to- analog converter
3. minimizes the effect of power supply interference.
4. requires a very complex hardware.
5. It is a tracking A/D converter.
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