GATE ECE

Analog to Digital and Digital to Analog Converters

Digital Circuits

(Past Years Questions)

Marks 1

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Consider a four bit D to A converter. The analog value corresponding to digital signals of values 0000 and 0001 are 0 V ...
GATE ECE 2015 Set 1
The number of comparators required in a 3-bit comparator type ADC is
GATE ECE 2002
The number of comparators in 4-bit flash ADC is
GATE ECE 2000
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 wil...
GATE ECE 1999
The advantage of using a dual slope ADC in a digital voltmeter is that
GATE ECE 1998
For an ADC, match the following : if List 1 A. Flash converter B. Dual slope converter C. Successive approximation C...
GATE ECE 1998
A 12-bit ADC is operating with a 1$$\mu $$ sec clock period and the total conversion time is seen to be 14 $$\mu $$ sec....
GATE ECE 1996
Match the List-1 (type of 8-bit ADC) with List-2(Minimum conversion time in clock cycles) List - 1 A. Successive ap...
GATE ECE 1994
Which of the resistance networks of figure can be used as 3 bit R-2R ladder DAC. Assume $${V_0}$$ corresponds to LSB. ...
GATE ECE 1990

Marks 2

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In an N bit flash ADC, the analog voltage is fed simultaneously to 2N− 1 comparators. The output of the comparators is t...
GATE ECE 2016 Set 2
In the following circuit, the comparator output is logic “I” if V1 > V2 and is logic “0” otherwise. The D/A conversion i...
GATE ECE 2008
In the following circuit, the comparator output is logic “I” if V1 > V2 and is logic “0” otherwise. The D/A conversion i...
GATE ECE 2008
In the digital-to-Analog converter circuit shown in the figure below, $${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$...
GATE ECE 2007
In the digital-to-Analog converter circuit shown in the figure below, $${V_{R\,}}\, = \,10V$$ and $$R\, = \,10k\Omega $$...
GATE ECE 2007
A 4-bit D/A converter is connected to a free-running 3-bit UP counter, as shown in the following figure. Which of the fo...
GATE ECE 2006
The circuit shown in figure is a 4-bit DAC The input bits 0 and 1 are represented by 0 and 5 V respectively. The OP- ...
GATE ECE 2003
For the 4 bit DAC shown in Figure, the output voltage $${V_0}$$ is ...
GATE ECE 2000

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