Digital Signal Processing

In a 4-bit R/2R ladder digital-to-analog converter, because of negative feedback, the operational amplifier keeps the inverting (minus) input near ________.

A:

5 volts

B:

zero volts

C:

a voltage determined by the binary weighted input

D:

none of the above

Answer: B

No answer description is available. Let's discuss.

📖

In a digital reproduction of an analog curve, accuracy can be increased by ________.

A:

sampling the curve more often

B:

sampling the curve less often

C:

decreasing the number of bits used to represent each sampled value

D:

all of the above

Answer: A

No answer description is available. Let's discuss.

📖

In troubleshooting a DAC, we check its performance characteristics, such as ________.

A:

nonmonotonicity

B:

differential nonlinearity

C:

low and high gain

D:

all of the above

Answer: D

No answer description is available. Let's discuss.

📖

A binary-weighted-input digital-to-analog converter has an input resistor of 100 k

. If the resistor is connected to a 5 V source, current through the resistor is ________.

A:

50 mA

B:

50

A

C:

5 mA

D:

500

A

Answer: B

No answer description is available. Let's discuss.

📖

Which type of ADC quantizes the analog signal into a stream of bits whose amount corresponds to the signal level?

A:

Successive approximation

B:

Sigma-delta

C:

Dual-slope

D:

None of the above

Answer: B

No answer description is available. Let's discuss.

📖

Questions for: Digital Signal Processing