1
GATE EE 2015 Set 1
MCQ (Single Correct Answer)
+2
-0.6
An $$8$$-bit, unipolar Successive Approximation Register type $$ADC$$ is used to convert $$3.5$$ $$V$$ to digital equivalent output. The reference voltage is $$+5 V.$$ The output of the $$ADC,$$ at the end of $$3$$rd clock pulse after the start of conversion, is
A
$$1010$$ $$0000$$
B
$$1000$$ $$0000$$
C
$$0000$$ $$0001$$
D
$$0000$$ $$0011$$
2
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A student has made a-$$3$$ bit binary down counter and connected to the $$R$$-$$2R$$ ladder type $$DAC$$ [Gain $$=$$ $$\left( { - 1k\Omega /2R} \right)$$ as shown in figure to generate a staircase waveform.

The output achieved is different as shown in figure. What could be the possible cause of this error?

GATE EE 2006 Digital Electronics - Analog to Digital and Digital to Analog Converter Question 2 English 1 GATE EE 2006 Digital Electronics - Analog to Digital and Digital to Analog Converter Question 2 English 2
A
The resistance values are incorrect
B
The counter is not working property
C
The connection from the counter to $$DAC$$ is not proper
D
The $$R$$ and $$2R$$ resistances are interchanged
3
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
A digital-to-analog converter with a full -scale output voltage of $$3.5$$ $$V$$ has a resolution close to $$14$$ $$m$$ $$V.$$ Its bit size is
A
$$4$$
B
$$8$$
C
$$16$$
D
$$32$$
4
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
The simplified block diagram of a $$10$$-bit $$A/D$$ converter of dual slope integrator type is shown in Fig. The $$10$$-bit counter at the output is clocked by a $$1$$ $$MHz$$ clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this $$A/D$$ converter is approximately. Input sample to be converter GATE EE 2003 Digital Electronics - Analog to Digital and Digital to Analog Converter Question 6 English
A
$$2$$ $$kHz$$
B
$$1$$ $$kHz$$
C
$$500$$ $$Hz$$
D
$$250$$ $$Hz$$
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