help me

I have application circuit OP-Amp for IR Thermopile but Im don’t know value ever component use in application Op-amp? and which IC Op-amp compatible use in circuit?
Please help me
Thanks

I won't look at it since it is in a download format.

Try and post GIF images as not everybody have MS Word to look at your document. Here it is for you in GIF format :wink:

You need an op amp with low offset error, since the thermopile is a very low voltage. Lowest you'll ever find is a chopper op amp, externally they have the same operation & pinout as a normal op amp. LTC1013 is one of the best choppers available, probably much better than you need.

https://www.linear.com/pc/productDetail.do?navId=H0,C1,C1154,C1009,C1021,P1222

Use precision resistors too.