1
GATE ECE 2025
MCQ (Single Correct Answer)
+2
-0.67
A 10-bit analog-to-digital converter (ADC) has a sampling frequency of 1 MHz and a full scale voltage of 3.3 V . For an input sinusoidal signal with frequency 500 kHz , the maximum SNR (in dB, rounded off to two decimal places) and the data rate (in Mbps) at the output of the ADC are _________ , respectively.
A
61.96 and 10
B
61.96 and 5
C
33.36 and 10
D
33.36 and 5
2
GATE ECE 2024
MCQ (Single Correct Answer)
+2
-1.33

A full scale sinusoidal signal is applied to a 10-bit ADC. The fundamental signal component in the ADC output has a normalized power of 1 W, and the total noise and distortion normalized power is 10 $\mu$W. The effective number of bits (rounded off to the nearest integer) of the ADC is _______.

A

7

B

8

C

9

D

10

3
GATE ECE 2022
Numerical
+2
-0

Consider the circuit shown with an ideal OPAMP. The output voltage V0 is __________ V (rounded off to two decimal places).

GATE ECE 2022 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 5 English

Your input ____
4
GATE ECE 2016 Set 2
MCQ (Single Correct Answer)
+2
-0.6
In an N bit flash ADC, the analog voltage is fed simultaneously to 2N− 1 comparators. The output of the comparators is then encoded to a binary format using digital circuits. Assume that the analog voltage source Vin(whose output is being converted to digital format) has a source resistance of 75 Ω as shown in the circuit diagram below and the input capacitance of each comparator is 8 pF. The input must settle to an accuracy of 1/2 LSB even for a full scale input change for properconversion. Assume that the time taken by the thermometer to binary encoder is negligible. GATE ECE 2016 Set 2 Digital Circuits - Analog to Digital and Digital to Analog Converters Question 11 English If the flash ADC has 8 bit resolution, which one of the following alternatives is closest to the maximum sampling rate?
A
1 megasamples per second
B
6 megasamples per second
C
64 megasamples per second
D
256 megasamples per second
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