Explanation: The polarity of the reference voltage is accordance with the type of the switch used. For example, in TTL switches, the reference voltage should be +5v and the output will be negative. 7. What is the disadvantage of binary weighted type DAC?
A. Require wide range of resistors
B. High operating frequency
C. High power consumption
D. Slow switching
Answer:A
Explanation: The polarity of the reference voltage is accordance with the type of the switch used. For example, in TTL switches, the reference voltage should be +5v and the output will be negative. 7. What is the disadvantage of binary weighted type DAC?
A. Require wide range of resistors B. High operating frequency C. High power consumption D. Slow switching
Explanation: For better resolution of output, the input binary word length has to be increased. As the number of bit increases, the range of resistance value increases. 8. The smallest resistor in a 12 bit weighted resistor DAC is 2.5kΩ, what will be the largest resistor value?