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LM56BIM bảng dữ liệu(PDF) 9 Page - National Semiconductor (TI) |
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LM56BIM bảng dữ liệu(HTML) 9 Page - National Semiconductor (TI) |
9 / 13 page Application Hints (Continued) 4.0 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 tem- perature of the ambient air. It is actually sensing the tem- perature difference of the air and the lands and printed circuit board that the leads are attached to. The most accurate tem- perature 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 cir- cuits must be kept insulated and dry, to avoid leakage and corrosion. This is especially true if the cirucit may operate at cold temperatures 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 LM56 or its connections. DS012893-18 FIGURE 3. Simplified Schematic www.national.com 9 |
Số phần tương tự - LM56BIM |
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Mô tả tương tự - LM56BIM |
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