For 10v range, LSB =10v/4096=2.4mv and MSB = (1/2)×full scale =(1/2)×10v =5v. 7. A multiplying DAC is given a reference voltage VR = Vom cos2πft. Determine the output voltage?
A. Vo(t) = Vom sin(2πft+180o)
B. Vo(t) = Vom cos(2πft+180o)
C. Vo(t) = Vom tan(2πft+180o)
D. Vo(t) = Vom sec(2πft+180o)
Answer:A
For 10v range, LSB =10v/4096=2.4mv and MSB = (1/2)×full scale =(1/2)×10v =5v. 7. A multiplying DAC is given a reference voltage VR = Vom cos2πft. Determine the output voltage?
A. Vo(t) = Vom sin(2πft+180o) B. Vo(t) = Vom cos(2πft+180o) C. Vo(t) = Vom tan(2πft+180o) D. Vo(t) = Vom sec(2πft+180o)
Explanation: Vo(t) = Vom cos2πft+180o. The 180ophase shift is added, since the VR is connected to inverting input terminal and Vom = 0v to (1-2-n)×Vim depends on the input code. 8. Multiplying digital to analog converters are used in