Vo =KVFS(d12-1+d22-2+….dn2-n) where, K -scaling factor, VFS-full scale output voltage. 2. Why the switches used in weighted resistor DAC are of single pole double throw (SPDT) type?
A. To connect the resistance to reference voltage
B. To connect the resistance to ground
C. To connect the resistance to either reference voltage or ground
D. To connect the resistance to output
Answer:A
Vo =KVFS(d12-1+d22-2+….dn2-n) where, K -scaling factor, VFS-full scale output voltage. 2. Why the switches used in weighted resistor DAC are of single pole double throw (SPDT) type?
A. To connect the resistance to reference voltage B. To connect the resistance to ground C. To connect the resistance to either reference voltage or ground D. To connect the resistance to output
Explanation: SPDT are electronic switches controlled by a binary word. If the binary input to a switch is 1, it connects the resistance to the reference voltage and if the input is 0, the switch connects the resistor to ground. 3. Determine the output current for an n-bit weighted resistor DAC?