Digital Signal Processing - General Questions (3)

Directions to Solve

Digital Signal Processing - General Questions

17.

A binary-weighted-input digital-to-analog converter has a feedback resistor, R_f, of 12 k. If 50 A of current is through the resistor, voltage out of the circuit is ________.

A.	0.6 V
B.	–0.6 V
C.	0.1 V
D.	–0.1 V

Answer: Option B

Explanation:

No answer description available for this question.

18.

A 4-bit R/2R ladder digital-to-analog converter uses ________.

A.	one resistor value
B.	two resistor values
C.	three resistor values
D.	four resistor values

Answer: Option B

Explanation:

No answer description available for this question.

19.

In a digital representation of voltages using an 8-bit binary code, how many values can be defined?

A.	16
B.	64
C.	128
D.	256

Answer: Option D

Explanation:

No answer description available for this question.

20.

The ADC0804 is an example of a ________.

A.	single-slope analog-to-digital converter
B.	dual-slope analog-to-digital converter
C.	digital-ramp analog-to-digital converter
D.	successive-approximation analog-to-digital converter

Answer: Option D

Explanation:

No answer description available for this question.

21.

The dual-slope analog-to-digital converter finds extensive use in ________.

A.	digital voltmeters
B.	function generators
C.	frequency counters
D.	all of the above

Answer: Option D

Explanation:

No answer description available for this question.

22.

For a 4-bit DAC, the least significant bit (LSB) is ________.

A.	6.25% of full scale
B.	0.625% of full scale
C.	12% of full scale
D.	1.2% of full scale

Answer: Option A

Explanation:

No answer description available for this question.

23.

An op-amp has very ________.

A.	high voltage gain
B.	high input impedance
C.	low output impedance
D.	all of the above

Answer: Option D

Explanation:

No answer description available for this question.

24.

Which term applies to the maintaining of a given signal level until the next sampling?

A.	Holding
B.	Aliasing
C.	Shannon frequency sampling
D.	"Stair-stepping"

Answer: Option A

Explanation:

No answer description available for this question.

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