Digital Circuits
Number System and Code Convertions
Marks 1Marks 2
Sequential Circuits
Marks 1Marks 2Marks 5Marks 8
Semiconductor Memories
Marks 1Marks 2
Logic Families
Marks 1Marks 2Marks 8
Analog to Digital and Digital to Analog Converters
Marks 1Marks 2
1
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
In the following circuit, the comparator output is logic “I” if V1 > V2 and is logic “0” otherwise. The D/A conversion is done as per the relation $$${V_{DAC}} = \sum\limits_{n = 0}^3 {{2^{n - 1}}{b_n}\,\,} Volts,$$$ where b3(MSB), b2, b1 and b0 (LSB) are the counter outputs.

The counter starts from the clear state.

GATE ECE 2008 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 7 English

The stable reading of the LED display is

A
06
B
07
C
12
D
13
2
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
In the following circuit, the comparator output is logic “I” if V1 > V2 and is logic “0” otherwise. The D/A conversion is done as per the relation $$${V_{DAC}} = \sum\limits_{n = 0}^3 {{2^{n - 1}}{b_n}\,\,} Volts,$$$ where b3(MSB), b2, b1 and b0 (LSB) are the counter outputs.

The counter starts from the clear state.

GATE ECE 2008 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 6 English

The magnitude of the error between VDAC and Vin at steady state in volts is

A
0.2
B
0.3
C
0.5
D
1
3
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the digital-to-Analog converter circuit shown in the figure below,
$${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$ GATE ECE 2007 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 9 English

The current i is

A
$$31.25\,\mu {\rm A}$$
B
$$62.5\,\mu {\rm A}$$
C
$$125\,\mu {\rm A}$$
D
$$250\,\mu {\rm A}$$
4
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
In the digital-to-Analog converter circuit shown in the figure below,
$${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$ GATE ECE 2007 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 8 English

The voltage V0 is

A
-0.781V
B
-1.562V
C
-3.125V
D
-6.250V
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