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AD813ANZ Datenblatt(PDF) 6 Page - Analog Devices |
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AD813ANZ Datenblatt(HTML) 6 Page - Analog Devices |
6 / 19 page AD813 REV. B –6– METALIZATION PHOTO Dimensions shown in inches and (mm). 2.5 0.5 –50 80 2.0 1.0 –40 1.5 010 –10 –20 –30 20 30 40 50 60 70 90 AMBIENT TEMPERATURE – C 14-LEAD SOIC TJ = +150 C 14-LEAD DIP PACKAGE Figure 3. Maximum Power Dissipation vs. Ambient Temperature Maximum Power Dissipation The maximum power that can be safely dissipated by the AD813 is limited by the associated rise in junction temperature. The maximum safe junction temperature for the plastic encap- sulated parts is determined by the glass transition temperature of the plastic, about 150 °C. Exceeding this limit temporarily may cause a shift in parametric performance due to a change in the stresses exerted on the die by the package. Exceeding a junction temperature of 175 °C for an extended period can result in device failure. While the AD813 is internally short circuit protected, this may not be enough to guarantee that the maximum junction tem- perature (150 °C) is not exceeded under all conditions. To ensure proper operation, it is important to observe the derating curves. It must also be noted that in (noninverting) gain configurations (with low values of gain resistor), a high level of input overdrive can result in a large input error current, which may result in a significant power dissipation in the input stage. This power must be included when computing the junction temperature rise due to total internal power. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD813 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE 12 +IN2 10 +IN3 VS– 11 VS– 11 VS– 11 9 –IN3 8 OUT3 6 –IN1 5 +IN1 4 VS+ DISABLE1 1 OUT2 14 –IN2 13 7 OUT1 DISABLE2 2 3 DISABLE3 0.057 (1.45) 0.124 (3.15) |
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