5.6. Case Study 5: Digital Camera Image Sensor (CMOS APS)

Try these first

1. 1.

   What function do photodiodes serve in a digital camera image sensor?

   Hint

   Think about the initial step of capturing light.

2. 2.

   What does CDS stand for?

   Hint

   It's a technique used in image processing.

3. 3.

   What does a photodiode do in a camera sensor?

   • Converts light to sound
   • Converts light to digital signals
   • Converts light to electrical current

   Hint

   Focus on the function of sensing light.

4. 4.

   Is correlated double sampling a technique used to minimize noise in image sensors?

   • True
   • False

   Hint

   Think about processes that enhance image quality.

5. 5.

   Design an image sensor that utilizes both per-column ADCs and noise reduction techniques. Discuss the trade-offs.

   Hint

   Consider the key concepts of speed vs. quality in sensor design.

6. 6.

   Explain how advances in fabrication technology impact the design of CMOS APS image sensors, particularly concerning noise management.

   Hint

   Think about the relationship between size and precision.