A. What is the maximum and minimum output voltage at the analog output? Fill in the table below by specifying min/max values and times when those values are achieved. Min/Max Value [Volts] Time [milliseconds] Min Max B. What is duration of one period of the signal y in milliseconds? What is the frequency of y? C. Let us assume that we provide a lookup table with only 10 samples for a single period of the signal y? Fill in the following table with the values for the first 4 samples (assume the first sample starts at t=0). Assume reference voltages VR+ = 3.5 V and VR- = 0V Sample t=? [ms] 1.5*cos(2*pi*f*t) 1.5+1.5*cos(2*pi*f*t) Lookup table [16-bit unsigned value in decimal] 1 2 3 4
To drive an external actuator we need to provide an analog periodic signal y, defined as follows, y=1.5+1.5*cos(2*pi*f*t) , f=20 Hz. Your task is to generate this signal using a 16-bit digital-to-analog converter peripheral (DAC16). Answer the following questions.
A. What is the maximum and minimum output voltage at the analog output? Fill in the table below by specifying min/max values and times when those values are achieved. Min/Max Value [Volts] Time [milliseconds] Min Max
B. What is duration of one period of the signal y in milliseconds? What is the frequency of y?
C. Let us assume that we provide a lookup table with only 10 samples for a single period of the signal y? Fill in the following table with the values for the first 4 samples (assume the first sample starts at t=0). Assume reference voltages VR+ = 3.5 V and VR- = 0V Sample t=? [ms] 1.5*cos(2*pi*f*t) 1.5+1.5*cos(2*pi*f*t) Lookup table [16-bit unsigned value in decimal] 1 2 3 4
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