Analog and Digital Converters - General Questions

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Analog and Digital Converters - General Questions

Sample-and-hold circuits in analog-to digital converters (ADCs) are designed to:

A.	sample and hold the output of the binary counter during the conversion process
B.	stabilize the comparator's threshold voltage during the conversion process
C.	stabilize the input analog signal during the conversion process
D.	sample and hold the D/A converter staircase waveform during the conversion process

Answer: Option C

Explanation:

No answer description available for this question.

Which is not an analog-to-digital (ADC) conversion error?

A.	differential nonlinearity
B.	missing code
C.	incorrect code
D.	offset

Answer: Option A

Explanation:

No answer description available for this question

In a flash analog-to-digital converter, the output of each comparator is connected to an input of a:

A.	decoder
B.	priority encoder
C.	multiplexer
D.	demultiplexer

Answer: Option B

Explanation:

No answer description available for this question

The resolution of a 0–5 V 6-bit digital-to-analog converter (DAC) is:

A.	63%
B.	64%
C.	1.56%
D.	15.6%

Answer: Option C

Explanation:

No answer description available for this question

What is the major advantage of the R/2R ladder digital-to-analog (DAC), as compared to a binary-weighted digital-to-analog DAC converter?

A.	It only uses two different resistor values.
B.	It has fewer parts for the same number of inputs.
C.	Its operation is much easier to analyze.
D.	The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot.

Answer: Option A

Explanation:

No answer description available for this question

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

The primary disadvantage of the flash analog-to digital converter (ADC) is that:

A.	it requires the input voltage to be applied to the inputs simultaneously
B.	a long conversion time is required
C.	a large number of output lines is required to simultaneously decode the input voltage
D.	a large number of comparators is required to represent a reasonable sized binary number

Answer: Option D

Explanation:

No answer description available for this question

The difference between analog voltage represented by two adjacent digital codes, or the analog step size, is the:

A.	quantization
B.	accuracy
C.	resolution
D.	monotonicity

Answer: Option D

Explanation:

No answer description available for this question.

Analog and Digital Converters - General Questions

Analog and Digital Converters - General Questions

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