4 bit Binary Weighted DAC

3 bit Binary Weighted DAC Vo = -V_ref/2(b2/1 + b1/2 + b0/4) Here I am using V_ref = -8 V When b0 = 0, b1 = 0, b2 = 0, Vo = 0V When b0 = 1, b1 = 0, b2 = 0, Vo = 1V When b0 = 0, b1 = 1, b2 = 0, Vo = 2V When b0 = 1, b1 = 1, b2 = 0, Vo = 3V When b0 = 0, b1 = 0, b2 = 1, Vo = 4V When b0 = 1, b1 = 0, b2 = 1, Vo = 5V When b0 = 0, b1 = 1, b2 = 1, Vo = 6V When b0 = 1, b1 = 1, b2 = 1, Vo = 7V