LM56

SNIS120G – APRIL 2000 – REVISED FEBRUARY 2013

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Figure 15. Simplified Schematic

MOUNTING CONSIDERATIONS

The majority of the temperature that the LM56 is measuring is the temperature of its leads. Therefore, when the

LM56 is placed on a printed circuit board, it is not sensing the temperature of the ambient air. It is actually

sensing the temperature difference of the air and the lands and printed circuit board that the leads are attached

to. The most accurate temperature sensing is obtained when the ambient temperature is equivalent to the

LM56's lead temperature.

As with any IC, the LM56 and accompanying wiring and circuits must be kept insulated and dry, to avoid leakage

and corrosion. This is especially true if the circuit operates at cold temperatures where condensation can occur.

Printed-circuit coatings are often used to ensure that moisture cannot corrode the LM56 or its connections.

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