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Digital Circuits
Number System and Code Convertions
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Analog to Digital and Digital to Analog Converters
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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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Questions Asked from Marks 1
GATE ECE 2025 (1) GATE ECE 2023 (1) GATE ECE 2015 Set 1 (1) GATE ECE 2002 (1) GATE ECE 2000 (1) GATE ECE 1999 (1) GATE ECE 1998 (2) GATE ECE 1996 (1) GATE ECE 1994 (1) GATE ECE 1990 (1)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics