Amplifier

Sunil Kumar2

Prodigy 30 points

Other Parts Discussed in Thread: PGA281

In an analog application Photo diode output current is 40 to 70uA, please suggest current to voltage interface.

Can i get differential signal.

over 11 years ago

0 Jason Bridgmon over 11 years ago

TI__Genius 14825 points

Sunil,

There is a TI Design, http://www.ti.com/tool/TIPD135, that you may consider. It uses a PGA281 to accommodate 10uA-100mA current sensing with <0.05% error.

Jason Bridgmon

0 Bonnie Baker - WEBENCH Design Center over 11 years ago in reply to Jason Bridgmon

TI__Expert 3555 points

Sunil,

Thanks for looking into photosensing circuits with TI in mind. We have another option that you may want to consider. TI has a WEBENCH tool that will help you design your photo sensing circuit. You can get into this tool by going to http://www.ti.com/lsds/ti/analog/webench/overview.page and using the box on the far right side of the screen. This box looks like:

When you see this box, click on "sensor" along the top and click on "photodiode" in the left column. ONce you have done this click on "start design".

For your application, you will want to input your max photo detector current on the upper right side of the screen as 70 uA. This looks like

Good luck and try this tool out. If you have any questions, please get back to me.

Amplifiers

Amplifiers forum

Amplifier