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GATE EE 2018 Exam: Digital Circuits Quiz 4
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Question 1
A digital-to-analog converter with a full-scale output voltage of 3.5V has a resolution close to 14 mV. Its bit size is:
Question 2
Two 8-bit ADCs, one of single slope integrating type and other of successive approximation type, take TA and TB times to convert 5V analog input signal to equivalent digital output. If the input analog signal is reduced to 2.5V, the approximate time taken by the two ADCs will respectively, be
Question 3
The ratio of maximum conversion time of 8 bit digital ramp type ADC to that of 8 bit successive approximation type is _____. (Assume both are applied with the clock of 20 kHz)
Question 4
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 3rd clock pulse after the start of conversion, is
Question 5
If the input of a DAC is changed from 0111110100 to 0111111001 then output voltage change is 25 mV. The full scale reading of DAC is
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Oct 13ESE & GATE EE
