J type thermocouple Interfacing with PIC18F45K80

[Djsarkar]

I have PIC18F45K80. I am using MPLABX 5.40 and XC8 2.30. I want to Interfacing J type thermocouple with PIC18F45K80. I have also operational amplifier UA74CP. thermocouple give very low voltage so operational amplifier will be required

Would UA74CP be suitable to interface J type thermocouple with PIC18F45K80?

 

[KlausST]

Hi,

this has been discussed many times before. Just do a forum search or at least look at the "similar threads".

It makes almost no difference which microcontroller you use. Thus you may omit it by your search.

Klaus

 

[Djsarkar]

Hi,

this has been discussed many times before. Just do a forum search or at least look at the "similar threads".

Hi Klaus

I have searched " J type thermocouple and UA74CP "threads before posting question and I don't see any similar threads. so that's why I asked the question. I saw some posts on thermocouple with different amplifier. I just wanted to know if I could be use UA74CP with j type because I don't have other operational amplifier

 

[KlausST]

Hi,

Sure you mean UA74CP?
Maybe UA741? This is one of the oldest Opamp from the 1960ies.
Now there is more than 60 years of progress.
UA741 is

Is the UA74CP as old as the 741?

For sure the very most of the modern Opamps will beat the 60 years old Opamp.

Klaus

 

[FvM]

Have you an idea of measurement resolution and accuracy you want to achieve?