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Digital Electronics - Interfacing to the Analog World

Exercise : Interfacing to the Analog World - General Questions
31.

What is the current in R1 and the current in R2 for the circuit shown below?

I1 = 0.416 mA, I2 = 0.416 mA
I1 = 0.357 mA, I2 = 0.357 mA
I1 = 1.25 mA, I2 = 0.625 mA
I1 = 0.625 mA, I2 = 1.25 mA
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
A 4-bit stairstep-ramp A/D converter has a clock frequency of 100 kHz and maximum input voltage of 10 V.
The maximum number of samples per second will be 6250.
The maximum sample rate will be 100,000 samples/second.
The minimum sample rate will be 6250 samples/second.
The minimum sample rate will be 100,000 samples/second.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
What is the accuracy of a D/A converter?
It is the reciprocal of the number of discrete steps in the D/A output.
It is the comparison between the actual output of the converter and its expected output.
It is the converter's ability to resolve between forward and reverse steps when sequenced over its entire range of inputs.
It is the deviation between the ideal straight-line output and the actual output of the converter.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Which of the equations below expresses the voltage gain relationship for an operational amplifier?
Vout = Vin/Av
Vout/Vin = Rout/Rin
Vin/Vout = Rout/Rin
Vout/Vin = –Rf/Rin
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
An analog quantity varies from 0–7 V and is input to a 6-bit A/D converter. What analog value is represented by each step on the digital output?
0.111 V
1.17 V
0.109 V
0.857 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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