Light to Frequency converter

Status
Not open for further replies.
T

thavamaran

Member level 4
Joined
Mar 2, 2009
Messages
69
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,889
light to frequency converter

Hi guys, i currently been working on this sensor TCS230, there is a portion of this sensor where is converts light to frequency, the datasheet is attached, so the
problem is i dont get the theory behind this conversion and through my
research i couldnt find any appropriate findings on this particular part, do
help me please.
 

It's a pretty simple circuit that's been in use using discrete parts for decades.

The ouput of the Photodiode ia a current that is proportional to the intensity of the light falling on it (within in its bandwidth). Its output drives a oscillator (basically a VCO, or ICO) whose frequency is proportional to the light level (more light = higher frequency).
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…