ADC and DAC Errors Assessment
 

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1. Please enter your name and email address below.

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2. A Quantizer is also known as

3. A range of analog values that is assigned a single digital code is known as a

4. To decrease the size of the Quanta we can

5. The ADC Transfer Curve is

6. A n-bit ADC has how many possible output codes?

7. Each ADC code transition occurs at intervals of

8. A quanta is equivalent in size to one LSB

9. The fact that a range of input voltages is represented by and converted to a single code is what we call

10. Quantization uncertainty arises from the fact that

11. Quantization Error is

12. To get the ±1/2 LSB error rather than the 0 to 1 LSB error, we introduce an offset into the A/D converter to force the error range to be ±1/2 LSB.

13. The first code transition point in an ADC, in the ideal case, is at an input value of

14. The transition to the last code, in the ideal case, is at an input value of

15. Whether or not the ADC has a built in offset, the quantization uncertainty is still 1 LSB.

16. The quantization error is the same whether or not the ADC has a built in offset

17. The code transition points DO NOT change when an input offset is built into the ADC

18. The DAC input, unlike that of the ADC, is continuous

19. While the ADC transfer curve has discontinuous horizontal lines, the DAC transfer curve

20. Like the ADC, the DAC has a built-in offset

21. It is common, but somewhat incorrect, to plot the DAC transfer curve as a

22. If we looked at a DAC output on an oscilloscope we would see a

23. DNL is also known as

24. Positive and negative DNL are the

25. In an ideal ADC, the code-to-code transition points are exactly

26. The difference between the ideal 1 LSB and the worst case actual input voltage change between output code transitions is called

27. In an ideal DAC, as opposed to the case with the ideal ADC, the code-to-code transition points are NOT exactly 1 LSB apart.

28. The code transition points in the ideal DAC are how far apart?

29. The difference between the ideal 1 LSB and the worst case actual output voltage change between output code transitions is the DAC

30. A missing code in an ADC means that the minimum DNL has reached a value of

31. For all practical purposes, an ADC has at least one missing code if DNL reaches a value of

32. When the sign of the slope of the input-output characteristic of a DAC is not constant, we say the DAC is

33. There is a change in the slope of the DAC transfer function whenever

34. Like in the ADC, DNL of a DAC can never be more negative than -1.0 LSB.

35. Which of these is True?

36. INL is a static specification and relates to the dynamic specification of

37. THD can be calculated from

38. Which INL test method allows the supplier to show the better INL specification?

39. Which INL test method is the more conservative?

40. It is reasonable to compare the INL of two devices when they are tested with different methods

41. It is possible to externally trim Gain and Offset Errors

42. External trimming can

43. The spec that tells us the worst deviation from the ideal device transfer curve is

44. Nearly all ADCs specify TUE

45. The fact that the input signal is quantized means that the ADC output is

46. The ADC discontinuous output creates what is known as

47. Quantization Error is

48. Theoretical SNR increases with increasing resolution

49. With more bits, the maximum converter (ADC or DAC) error is larger

50. Higher resolution converters offer better noise performance