Hi,
        I'm trying to interface a K type thermocouple to a 16f877. I tried using
        a 725 based Amp with a gain of around 200. But for some reason, the
accuracy
        is not very good. I think using a monolithic thermocouple conditioner would
be the
        best option. I downloaded the DS for AD595 and AD597. Both of which are
laser trimmed
        for K type thermocouples, with built in cold junction compensation giving a
steady
        10mV/C output (0.5C accuracy guaranteed). But unfortunately, they are not
available
        locally. Could you folks suggest any other commonly used Thermocouple
Conditioner ICs
        Or maybe point me to a discrete OPAMP based design.

Thanks,

Jeethu Rao

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