Help in choosing voltage source

Status
Not open for further replies.
4

4tuty

Member level 3
Joined
Mar 27, 2012
Messages
56
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,723
Hi,

I am using a costly photodetector FGA21 , it requires 3 volt reverse bias (absolute maximum).I am powering the device using smartphone (5V). I have 3.3 volt regulator which is exceeding the voltage rating shall i use voltage divider (10k&100k)? or shall i use voltage reference IC (2.8) 2.5v or 3 V. And, Do i need opamp transimpedence amplifier of simply connect the voltage output (PFA) to teensy 3.2 developer board advice needed.

Thank you

 
Last edited by a moderator:

Hi,

What I can answer is: yes, rating is 3V max, thus it's not recommended to use it at 3.3V.

But all the rest depends on your application, your requirements.
Like: expected current range, linearity, frequency response, accuracy, precision...
We don't know about all this.

For a high quality measurement: a precise reference and a TIA is my recommendation.

Klaus
 

    4

    4tuty

    Points: 2
    Helpful Answer Positive Rating
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…