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
A. All of the mentioned
B. Digitally programmable filter
C. Digitally programmable oscillator
D. Digitally controlled audio attenuator
Answer:A
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
A. All of the mentioned B. Digitally programmable filter C. Digitally programmable oscillator D. Digitally controlled audio attenuator
Explanation: In multiplying DAC, the output voltage is a fraction of the voltage representing the input digital code and the attenuator setting can be controlled by digital logic. 9. A 10-bit D/A converter have an output range from 0-9v. Calculate the output voltage produced when the input binary number is 1110001010.