Difference between pin photodiode and avalanche photodiode

Before we learn about this article first let we check it out PIN diode and avalanche photodiode (APD), so we have to better understand this article. This article gives information about the difference between a PIN  diode and APD to know more details about it.

PIN diode :
  • PIN photodiode does not have a high-intensity electric field region.
  • Sensitivity is very low in PIN photodiode.
  • The responsibility of a PIN diode is limited.
  • Cost is low.
  • S/N ratio is very poor.
  • Conversion efficiency is 0.5 to 1.0 amps/watt.
  • The response time of PIN is half that of APD.
  • The detector circuit is very simple.
APD :
  • APD is a high-intensity electric field region.
  • Sensitivity is very high in APD.
  • The responsibility of APD can have much larger values,
  • Cost is high.
  • S/N ratio is better.
  • Conversion efficiency is 0.5 to 100 Amps/watt.
  • The response time of APD is almost double that of the PIN,
  • The detector circuit is more complex.