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INA826: Thermal Pad Connection

Hao Wang14
Expert 4415 points
Part Number: INA826


Hi Team,

May I know how to deal with the thermal pad when powered by single supply?

Should it be connected to -Vs only? Because it's found INA826 can still work well if thermal pad is not connected, is there any risk?

Thanks and Best Regards!

Hao

  • 0
    TI__Guru* 77541 points

    Hi Wang Hao,

    You want to connect Vs- pin to most negative supply rail in the circuit or connect it to ground in your single supply rail scenario.

    The thermal die pad is a part of junction isolation die structure; the reverse-biasing of the junction will create extremely high resistance isolation from the underside of thermal die pad/die substrate to IC's internal layers. It is highly recommended. In addition, the thermal pad will help the heat dissipation of the part. 

    Best,

    Raymond