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Output range problem for AD8497

Hi. I am using AD8497 for K-Type thermocouple measurement. I have given supply of +5v and 0V. and Ref voltage of +0.5V. My input signal ranges from -2.0mV to 70mV. I get output signal only for input signal upto 40mV. Please suggest schematic for measuring the complete range of my input signal.

Below is the schmatic I have used.

Thanks and Regards,

Kumar

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  • Hi Jordyn,

    Thanks for your reply.

       1. Actually, 5V is the maximum range that I am using in my design and I

       don't have scope to increase it. *So, can you suggest a way to measure

       using 5v supply.* Does changing the values of resistor at the input side

       will meet my requirement. I have a limitation to using the same circuit as

       I got the PCB. I can just vary the values of components.

       2. Is there any other IC that meets my requirement with 5v and same

       Package.

    Regards,

    Kumar

    On Sat, Feb 17, 2018 at 3:30 AM, jrombola <

Reply
  • Hi Jordyn,

    Thanks for your reply.

       1. Actually, 5V is the maximum range that I am using in my design and I

       don't have scope to increase it. *So, can you suggest a way to measure

       using 5v supply.* Does changing the values of resistor at the input side

       will meet my requirement. I have a limitation to using the same circuit as

       I got the PCB. I can just vary the values of components.

       2. Is there any other IC that meets my requirement with 5v and same

       Package.

    Regards,

    Kumar

    On Sat, Feb 17, 2018 at 3:30 AM, jrombola <

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