Can a single IC be connected to a thermocup with multiple channels in Cold Junction Compensation?

Question

I have a multiple thermocuple signal conditioner and 5 instrumentation amplifiers. I want to add analog cold junction compensation, but it is too costly to add it to each circuit separately. Will it be a problem if I add the output of a single LTC1025 IC as offset to all 5 instrumentation amplifiers? Or can I add a buffer to the LTC1025 output and offset it to all channels??

GlenBrisebois · Accepted Answer

Yes, a single LT1025 can compensate multiple cold junctions provided the junctions are at similar / identical temperatures as the LT1025 itself. An example of this is shown in the LTC1053 data sheet, page 12.)

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Can a single IC be connected to a thermocup with multiple channels in Cold Junction Compensation?