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AD8386JCPZ Fiches technique(PDF) 7 Page - Analog Devices |
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AD8386JCPZ Fiches technique(HTML) 7 Page - Analog Devices |
7 / 20 page AD8386 Rev. 0 | Page 7 of 20 OPERATING TEMPERATURE RANGE The maximum operating junction temperature is 150°C. The junction temperature trip point of the thermal protection circuit is 165°C. Production tests guarantee a minimum junction temperature trip point of 125°C. Consequently, the maximum guaranteed operating junction temperature is 125°C when the thermal protection circuit is enabled and 150°C when the thermal protection circuit is disabled. To ensure operation within the specified operating temperature range, it is necessary to limit the maximum power dissipation as ( ) () 59. 0 09 . 0 lfm in Airflow T T P Air Still JA A JMAX DMAX × − θ − ≈ 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 40 45 50 55 60 65 70 75 80 90 85 95 65 70 75 80 85 90 95 100 105 115 110 120 AMBIENT TEMPERATURE ( °C) OVERLOAD PROTECTION DISABLED ENABLED STILL AIR 200LFM 400LFM QUIESCENT 720p HDTV Figure 2. Maximum Power Dissipation vs. Temperature The AD8386 is on a 4-layer JEDEC PCB with a thermally optimized landing pattern with 16 vias. The quiescent power dissipation of the AD8386 is 1.4 W. When driving a 12-channel 720p HDTV panel with an input capacitance of 150 pF, the AD8386 dissipates 1.66 W when displaying 1 pixel wide alternating white and black vertical lines generated by a standard 720p HDTV input video. Conditions include the following: • AVCC = 15.5 V • DVCC = 3.3 V • VFS = 5 V • C L = 150 pF • f PIXEL = 74.25 MHz • Black-to-white transition = 4 V • Active video time = 75% Figure 2 shows these power dissipations. |
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Description similaire - AD8386JCPZ |
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