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TMP75: layout guild check

Part Number: TMP75

From they layout guild  says ground plane , does it mean that the layer closest to the Temp Sensor needs to be laid with a ground plane, or should I just hollow out all the wiring layers under the IC? Thank you.

  • Hi Louis,

    The ground plane acts as a thermal path or thermal coupling with the heat source on the PCB. This improves thermal response of the temperature sensor because of the thermal conductivity of the metal traces/plane. The plane is then connected to the ground pins through vias. 

    Best regards,

    Simon Rojas