The GATE Grind

GATE Digital Circuits: Data Converters – Previous Year Questions

8 GATE previous year questions on Data Converters (Digital Circuits, Electronics and Communication Engineering) with answers and explanations, from every paper.

  1. GATE 2015 EC Q26 (1 mark, Numerical answer) – Consider a four bit D to A converter. The analog value corresponding to digital signals of values 0000 and 0001 are 0 V and 0.0625 V respectively. The…
  2. GATE 2020 EC Q30 (1 mark, Numerical answer) – A 10-bit D/A converter is calibrated over the full range from 0 to 10 V. If the input to the D/A converter is 13A (in hex), the output (rounded off to…
  3. GATE 2021 EC Q30 (1 mark, Numerical answer) – An 8-bit unipolar (all analog output values are positive) digital-to-analog converter (DAC) has a full-scale voltage range from 0 V to 7.68 V. If the…
  4. GATE 2023 EC Q31 (1 mark, Numerical answer) – The signal-to-noise ratio (SNR) of an ADC with a full-scale sinusoidal input is given to be 61.96 dB. The resolution of the ADC is bits (rounded off…
  5. GATE 2023 EC Q62 (2 marks, Numerical answer) – A sample and hold circuit is implemented using a resistive switch and a capacitor with a time constant of 1 μs. The time for the sampling switch to…
  6. GATE 2024 EC Q46 (2 marks, Multiple choice) – 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…
  7. GATE 2025 EC Q35 (1 mark, Numerical answer) – A 4-bit weighted-resistor DAC with inputs b 3, b 2, b 1, and b 0 (MSB to LSB) is designed using an ideal opamp, as shown below. The switches are…
  8. GATE 2025 EC Q44 (2 marks, Multiple choice) – 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…