3.0 Applications Information

3.1 MOUNTING CONSIDERATIONS

The LM95010 can be applied easily in the same way as

other integrated-circuit temperature sensors. It can be glued

or cemented to a surface. The temperature that the

LM95010 is reading will typically be within +0.2 ˚C of the

surface temperature to which the LM95010’s leads are at-

tached to.

This presumes that the ambient air temperature is almost the

same as the surface temperature; if the air temperature were

much higher or lower than the surface temperature, the

actual temperature measured would be at an intermediate

temperature between the surface temperature and the air

temperature.

Alternatively, the LM95010 can be mounted inside a sealed-

end metal tube, and can then be dipped into a bath or

screwed into a threaded hole in a tank. As with any IC, the

LM95010 and accompanying wiring and circuits must be

kept insulated and dry, to avoid leakage and corrosion. This

is especially true if the circuit may operate at cold tempera-

tures where condensation can occur. Printed-circuit coatings

and varnishes such as Humiseal and epoxy paints or dips

are often used to ensure that moisture cannot corrode the

LM95010 or its connections.

The thermal resistance junction to ambient (

θ

rameter used to calculate the rise of a device junction tem-

perature due to its power dissipation. For the LM95010 the

equation used to calculate the rise in the die temperature is

as follows: T

θ

where I

logic "Low" output level of SWD, and I

on SWD. Since the LM95010’s junction temperature is the

actual temperature being measured care should be taken to

minimize the load current that the LM95010 is require to

drive. When mounted to a PCB, with 2 oz. copper foil, the

LM95010’s thermal resistance is typically 210 ˚C/W.

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