draw and explain the R-2R ladder dac.
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Answer / Vishwajeet Pathak
The R-2R Ladder DAC (Digital-to-Analog Converter) is a simple voltage divider circuit used to convert a digital signal into an analog voltage. It consists of resistors connected in a series-parallel configuration, with each resistor representing a specific binary value. Here's a simplified diagram for an 8-bit R-2R Ladder DAC:n
+VDD ---| R1 ---| R2 ---| R3 ---| R4 ---| R5 ---| R6 ---| R7 ---| R8 ---| GND
In this circuit, each resistor pair (Ri and Ri+1) has a total resistance of 2R, while the total resistance between VDD and GND is 8R (assuming all resistors have the same value).nTo convert a digital input, connect it to the nodes between each resistor pair. The output voltage will be proportional to the weighted sum of the resistances corresponding to the binary values.nFor example, if the input is binary 10101010, the output voltage would be:nvout = (R4 + R5)/(8R) + (R3 + R6)/(8R) + (R2 + R7)/(8R)
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