Mikrokontrollerid ja robootika homework 2
-85dB
c) MAX1205 pipeline ADC. -84dB
Question 9
Name two disadvantages of:
a) Flash ADC - expensive, high power consumption
b) SAR ADC - speed is limited, needs anti-aliasing filter
c) Dual-slope ADC -slow conversion, expensive external components required (high
accuary components)
a) Sigma Delta ADC -multibit ADC and multibit feedback DAC – higher order
Question 10
Find the following for the built-in ADC in the PIC18F45K20:
a) Architecture - SAR(Succesive Approximation Register)
b) Differential linearity - +- 0.4 LSB
c) Minimum acquisition time – 1.4ms
d) Minimum conversion time – 8.4 𝜇𝑠
Question 11
A 10 bit DAC has a reference voltage of 5.12V. What is the output
voltage for a binary input code of 11000100012?
11000100012 = 785
210 = 1024
(5.12/ 1024) * 785 = 3.925V
Output voltage = 3.925V
Question 12
A 12 bit DAC has a reference voltage of 10V. What is the output
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