Interfacing to the Analog World Questions

• The main advantage of the successive-approximation A/D converter over the counter-ramp A/D converter is its:
• What circuitry is on an ADC0808 IC?
• The practical use of binary-weighted digital-to-analog converters is limited to:
• What is the purpose of a sample-and-hold circuit?
• Why is a binary-weighted DAC usually limited to 4-bit binary conversion?
• Which of the statements below best describes the basic operation of a dual-slope A/D converter?
• What is the maximum conversion time for a counter-ramp ADC with 8-bit resolution and a clock frequency of 20 kHz?
• Two principal advantages of the dual-slope ADC are its:
• What is the output voltage of the given circuit if the inputs are as follows: 20 = 1, 21 = 1, 22 = 0, 23 = 0?
• A 4-bit stairstep-ramp A/D converter has a clock frequency of 100 kHz and maximum input voltage of 10 V.
• One major difference between a counter-ramp A/D converter and a successive-approximation converter is:
• What is the main disadvantage of the stairstep-ramp A/D converter?
• One disadvantage of the tracking A/D converter is:
• What is the current in the feedback resistor for the circuit given below?
• What is the main disadvantage of the counter-ramp A/D converter?
• What is the accuracy of a D/A converter?
• What is the major advantage of the R/2R ladder D/A converter as compared to a binary-weighted D/A converter?
• An analog-to-digital converter has a four-bit output. How many analog values can it represent?
• What is the maximum output voltage for the circuit shown below?
• If the range of output voltage of a 6-bit DAC is 0 to 15 volts, what is the step voltage of the output?