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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT1355CS8 датащи(PDF) 11 Page - Linear Technology |
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LT1355CS8 датащи(HTML) 11 Page - Linear Technology |
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11 / 16 page  11 LT1355/LT1356 1355/1356 SS01 OUT +IN –IN V+ V– R1 800 Ω CC RC C SCHE ATIC SI PLIFIED Power Dissipation The LT1355/LT1356 combine high speed and large output drive in small packages. Because of the wide supply voltage range, it is possible to exceed the maximum junction temperature under certain conditions. Maximum junction temperature (TJ) is calculated from the ambient temperature (TA) and power dissipation (PD) as follows: LT1355CN8: TJ = TA + (PD x 130°C/W) LT1355CS8: TJ = TA + (PD x 190°C/W) LT1356CN: TJ = TA + (PD x 110°C/W) LT1356CS: TJ = TA + (PD x 150°C/W) Worst case power dissipation occurs at the maximum supply current and when the output voltage is at 1/2 of either supply voltage (or the maximum swing if less than 1/2 supply voltage). For each amplifier PDMAX is: PDMAX = (V+ – V–)(ISMAX) + (V+/2)2/RL Example: LT1356 in S16 at 70 °C, VS = ±15V, RL = 1k PDMAX = (30V)(1.45mA) + (7.5V)2/1kW = 99.8mW TJMAX = 70°C + (4 × 99.8mW)(150°C/W) = 130°C APPLICATIONS INFORMATION |
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