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engineer23
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Here is my problem:
There is a 4 bit ADC with an input range of -5 to +5 Volts.
I would like someone to check my answers.
Q. How many states does the ADC have?
A. The ADC has 2^4 = 16 states.
Q. What voltage does each step represent?
A. range = 10 V
no. of steps = 16-1 = 15
10/15 = .6667 V
Q. Vout = -5 + (digital count*.6667)
What is the largest number an 8 bit binary number can represent? Determine Vout for
this number. If it does not equal 5V, explain.
A. largest 8 bit binary number can represent is 255
Vout = -5 + (255 *.6667)
Vout = 165 V
largest number 4 bits can represent is 15
255 exceeds capability of 4 bit ADC
Q. What is the dynamic range of an 8 bit DAC in dB?
A. range of 8 bit DAC is 0 to 255
20 log (255) = 48.13 dB
There is a 4 bit ADC with an input range of -5 to +5 Volts.
I would like someone to check my answers.
Q. How many states does the ADC have?
A. The ADC has 2^4 = 16 states.
Q. What voltage does each step represent?
A. range = 10 V
no. of steps = 16-1 = 15
10/15 = .6667 V
Q. Vout = -5 + (digital count*.6667)
What is the largest number an 8 bit binary number can represent? Determine Vout for
this number. If it does not equal 5V, explain.
A. largest 8 bit binary number can represent is 255
Vout = -5 + (255 *.6667)
Vout = 165 V
largest number 4 bits can represent is 15
255 exceeds capability of 4 bit ADC
Q. What is the dynamic range of an 8 bit DAC in dB?
A. range of 8 bit DAC is 0 to 255
20 log (255) = 48.13 dB