Testing A / D Converters Knowledge Evaluation
Take the Challenge!

Print this and answer the questions below. If you miss more than 3, then you are a good candidate for this course.

Click here for a printable version

Select the correct answer for the questions below

1. How many measurable code widths does a 10-bit ADC have?

1. 1024
2. 1023
3. 1022
4. 1021

2. Which type of ADC requires a sample-and-hold circuit at its input?

1. SAR
2. Flash
3. Sigma-Delta
4. Pipelined

3. Which ADC parameter does quantization error affect most?

1. Total Harmonic Distortion
2. Signal-to-Noise Ratio
3. Gain
4. Spurious-Free Dynamic Range

4. Noise shaping is:

1. An effect seen with flash ADCs
2. An effect seen with SAR ADCs
3. An effect seen with all types of ADCs
4. An effect seen with sigma-delta ADCs

5. If an ADC has "no missing codes", its DNL is guaranteed better than:

1. 0.5 LSB
2. 1.0 LSB
3. 1.5 LSB
4. 2.0 LSB

6. What advantage does a servo loop have over a ramp generarator for ADC linearity testing?

1. It is a faster method
2. It requires no special hardware
3. It is a more accurate method
4. It produces a lower distortion sinusoid

7. What is the primary disadvantge of using the normal histogram method for ADC linearity testing?

1. It does not find DNL values
2. It does not find sparkle codes
3. It does not find INL values
4. It does not find THD values

8. Which formula best describes the frequencies at which Intermodulation Distortion appears?

9. What is the "Effective Number of Bits" for an ADC?

1. The resolution of the device
2. The resolution of the device minus its measured INL value
3. A calculation that relates SNR and linearity
4. A measurement that relates THD and linearity

10. What is the dynamic range of a 16-bit ADC?

1. 32dB
2. 65535dB
3. 16dB
4. 96dB

   Click Here to Access the Answers

Copyright 1984 - 2006 | Soft Test, Inc. |  All Rights Reserved