Hey guys,

I am presently working on building a bar code scanner on the lines of a project I came across online.
https://courses.cit.cornell.edu/ee476/FinalProjects/s2006/nrs27th257/nrs27th257/

The circuit described in the link employs the use of LMC7111 Op-Amp , however I do not have it. What I do have is the OPA277 Op-Amp. Will it be able to get the job done ??

Any help is greatly appreciated.

Thanks.

 

Hello,

There is a difference between the opamps.
The LMC7111 is a rail to rail output opamp:

As the OPA277 is NOT rail to rail output:

This may give problems.

Bertus

PS I have attached both datasheets.

 

Thank You.