Consider the DAC (digital to Analog Converter) shown below. Where b1, b2….bn can be either 0 or 1. What will be the value of the output current io, if the digital signal is in the form of b1b2b3…bn.

• A. Vref/2R (b1/2+ b2/4 + b3/8….+bn/(2N))
• B. 2Vref/R (b1/2+ b2/4 + b3/8….+bn/(2N))
• C. Vref/R (b1/2+ b2/4 + b3/8….+bn/(2N))
• D. none of the above