20.4 Volts 3.3 Volts 15.3 Volts Comments:
(TCO #5) An embedded system with an 8-bit analog-to-digital converter is connected to a transducer with an output voltage of 10 millivolts. This signal is Question 7. amplified by an amplifier with a gain of 25. Assume that this signal level is : appropriate for the ADC input. If the reference voltage of the ADC converter is 5 volts, what will be the output of the ADC in binary form? Student Answer: 01100110 00110011 00001101 01111011 Comments:
8.
Question (TCO #5) An 8-bit analog-to-digital converter has maximum output voltage of 2.5 : VDC. What is the reference voltage to this ADC?
Student Answer: 2.5 VDC 5 VDC 1.25 VDC None of the above Comments:
9.
Question (TCO #5) A well-behaved analog signal with a frequency of 20 kHz is being : sampled. What is the sampling frequency if frequency aliasing occurs?
Student Answer: 90 kHz 40 kHz 85 kHz