Question 1:
a) Describe the operation of flash A/D converter.
b) Describe how dual slope A/D converter provides noise rejection.
c) If the maximum output voltage of a 7-bit D/A converter is 25.4V. What is the smallest change in the output as the binary count increases?
Question 2:
a) What are the sources of errors in DAC? Describe.
b) The digital input for a 4-bit DAC is 0110 compute its final output voltage.
c) Draw and describe the block diagram of IC 1408.
Question 3:
a) Compare flash, dual slope and successive approximation register type ADCs.
b) Find out step size and analog output for 4-bit R-2R laddar DAC when input is 0100 and 1100. Assume Vref = +5V.
Question 4:
a) Describe Functional diagram of successive approximation ADC
b) Describe counter type A/D converter.
Question 5:
a) The basic step of a 16-bit DAC is 10.3 mV. If 0000000000000000 represents 0V, what output is produced if the input is 1101101111111111?
b) Compute the values of the LSB, MSB and full scale output for a 32 bit DAC for the 0 to 20V.
Question 6: Write brief note on:
a) R-2R Ladder DAC.
b) Inverted R-2R Ladder.
Question 7:
a) Describe the operation of a multiplying DAC and illustrate its applications.
b) List out different types of D/A converter and A/D converters and compare their advantages and disadvantages.