6.5. Transfer Function of an Ideal ADC

Try these first

1. 1.

   What is resolution in the context of an ADC?

   Hint

   Think about how digital outputs relate to analog inputs.

2. 2.

   How do you calculate the LSB for an N-bit ADC?

   Hint

   Consider both the maximum and minimum voltage values.

3. 3.

   What is the LSB for an ideal ADC with a range of 0V to 5V and 3 bits?

   • 0.1V
   • 0.5V
   • 0.625V

   Hint

   Apply the LSB formula!

4. 4.

   The digital code for an input of 4.0V in a 5-bit ADC (0V to 5V), is it equal to 8?

   • True
   • False

   Hint

   Calculate the code based on the defined range and bits.

5. 5.

   An 8-bit ADC has an input range of 0V to 12V. What is the resolution in volts and what digital code would be generated for an input of 6.5V?

   Hint

   Break this down into steps; first find resolution and then the code.

6. 6.

   In an ADC used for audio, if you have a 16-bit converter and a range of ±2.5V, explain how it's beneficial for capturing audio signals and what challenges might arise due to quantization.

   Hint

   Think about the range and how many levels define the representation of audio quality.