Determine the analog output voltage of 6-bit DAC, Computer Engineering

Determine the analog output voltage of 6-bit DAC (R-2R ladder network) with Vref as 5V when the digital input is 011100.

Ans. The analog output for 6-bit R-2R DAC ladder network is given as:

V₀ = V_R/2ⁿ(a_n-12^n-1 + a_n-22^n-2 +.........+a₁2¹ + a₀2⁰)

Provided data: V_R = 5V, n = 6, a₅=0 a₄=1, a₃=1, a₂=1,a₁ =0,a₀=0

V₀ = 5/2⁶(a₅2⁵ + a₃2³ +a₂2² +a₁2¹ a₀2⁰)

V₀ = 5 x (28/64)

= 2.1875V

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