1.000 volts is input into a microcontroller ADC which uses a reference of 3.3 volts. What is the ADC output if the ADC is set for 8 bit resolution? 0.333 78 1000 788 O O
1.000 volts is input into a microcontroller ADC which uses a reference of 3.3 volts. What is the ADC output if the ADC is set for 8 bit resolution? 0.333 78 1000 788 O O
Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
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![**Question:**
1.000 volts is input into a microcontroller ADC which uses a reference of 3.3 volts. What is the ADC output if the ADC is set for 8-bit resolution?
- ○ 0.333
- ○ 78
- ○ 1000
- ○ 788
**Explanation:**
When using an 8-bit ADC (Analog to Digital Converter), the resolution is 2^8, which is 256 discrete levels. The reference voltage of 3.3 volts is divided into these levels.
To find the digital output for a given input voltage, use the formula:
\[ \text{ADC Output} = \left( \frac{\text{Input Voltage}}{\text{Reference Voltage}} \right) \times (2^{\text{Resolution}} - 1) \]
In this case:
\[ \text{ADC Output} = \left( \frac{1.000}{3.3} \right) \times 255 \]
Calculate to find the correct output level.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc58b0b58-1ae4-4599-8922-e285399f847a%2Fbef8d5d0-4d4f-4a47-bb65-c6eec7eb73c2%2Fhk55zcf_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
1.000 volts is input into a microcontroller ADC which uses a reference of 3.3 volts. What is the ADC output if the ADC is set for 8-bit resolution?
- ○ 0.333
- ○ 78
- ○ 1000
- ○ 788
**Explanation:**
When using an 8-bit ADC (Analog to Digital Converter), the resolution is 2^8, which is 256 discrete levels. The reference voltage of 3.3 volts is divided into these levels.
To find the digital output for a given input voltage, use the formula:
\[ \text{ADC Output} = \left( \frac{\text{Input Voltage}}{\text{Reference Voltage}} \right) \times (2^{\text{Resolution}} - 1) \]
In this case:
\[ \text{ADC Output} = \left( \frac{1.000}{3.3} \right) \times 255 \]
Calculate to find the correct output level.
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