Engineering, 12.03.2020 20:18 Jael2

1. An analog to digital converter has a resolution of 12-bits and its reference voltage is connected to 3.3 Volts.
i. What is the smallest change in voltage that the ADC can identify?
ii. What is the digital output value (in decimal) of the ADC if the analog voltage applied to the ADC input is 1.35 Volts?
2. In an ideal system, a high brightness LED dissipates 1.2 Watts when a 100% duty cycle PWM signal drives the LED. How much power does the LED dissipate when driven with a PWM signal at a duty cycle of 35%?3. Many display controllers (whether for LED or LCD displays) multiplex display segments, turning groups of display segments on and off quicker than the human eye can perceive. Describe one benefit and one drawback of multiplexing display segments.

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