7.3. DAC Architectures

Try these first

1. 1.

   Describe the main advantage of the R-2R Ladder DAC.

   Hint

   Think about how its design differs from the Binary-Weighted Resistor DAC.

2. 2.

   What is the primary function of a DAC?

   Hint

   Consider what the 'conversion' aspect entails.

3. 3.

   What is the main advantage of the Binary-Weighted Resistor DAC?

   • Requires no precision resistors
   • Limited scalability
   • Fast conversion speed

   Hint

   Consider what makes a DAC suitable for applications requiring quick responses.

4. 4.

   True or False: The R-2R Ladder DAC offers better speed than the Binary-Weighted DAC.

   • True
   • False

   Hint

   Think about the core design differences.

5. 5.

   Design a simple circuit diagram for a Binary-Weighted Resistor DAC and explain how it would convert a 4-bit binary signal to an analog output.

   Hint

   Consider the bit significance for each resistor in the diagram.

6. 6.

   Research and justify why the Current-Steering DAC is preferable in modern high-speed communication systems over others.

   Hint

   Look into the performance metrics that are critical for communication systems.