Explanation: The largest resistor value for 12-bit DAC= 2n×R = 212×2.5kΩ = 4096×2.5kΩ =10.24MΩ. 9. CMOS inverter is used as SPDT switch in resistor DAC and is connected to the op-amp line. Find the output of CMOS, if the input applied is 1
A. Resistance is connected to ground
B. Resistance is connected to input line
C. Resistance is connected to bit line
D. None of the mentioned
Answer:A
Explanation: The largest resistor value for 12-bit DAC= 2n×R = 212×2.5kΩ = 4096×2.5kΩ =10.24MΩ. 9. CMOS inverter is used as SPDT switch in resistor DAC and is connected to the op-amp line. Find the output of CMOS, if the input applied is 1
A. Resistance is connected to ground B. Resistance is connected to input line C. Resistance is connected to bit line D. None of the mentioned
Explanation: When Qbar =1, it makes transistor Q1-ON and Q2-OFF. The output of the CMOS inverter is 0v, connecting the resistance R1 to ground. 10. How to overcome the limitation of binary weighted resistor type DAC?