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INA126: single power supply problems

Frederico Mendes
Prodigy 20 points
Part Number: INA126

Hi. I am having problems to use INA126 with load cell. My configuration is: Input common mode Voltage = 2.5V. Power Supply = 5V/0V. Vref = 0V. I would like to know the limits of Output Voltage I will have.

For example, on the picture below, I know that if I were using Vref = 2.5V it would be between 0.6V - 4.3V.

Thanks for any input about that.

  • 0
    TI__Expert 5830 points

    Hello Frederico,

    The output limit for the INA126 with your specifications are from 800mV - 4.25V. 

    The INA tool I used to generate this trump plot can be downloaded from the attached link below in the software section.

    Best regards,


    Errol Leon
    Texas Instruments
    Precision Amplifier Applications Engineer

  • 0 in reply to Errol Leon6
    Prodigy 20 points

    Thanks Leon!

    I did not know about this INA TOOL. I will use it to simulate other configurations.

    Probably what I need is to use symmetrical supply... I would like to Min Vout near real zero volt.

    Best regards.