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LM7121IM5X bảng dữ liệu(PDF) 15 Page - National Semiconductor (TI) |
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LM7121IM5X bảng dữ liệu(HTML) 15 Page - National Semiconductor (TI) |
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15 / 19 page ![]() Application Information (Continued) It is very important to keep the lead lengths to a minimum and to provide a low impedance current path by using a ground-plane on the board. Caution: If R L is removed, the current balance at the output of LM7121 would be disturbed and it would have to supply the full amount of load current. This might damage the part if power dissipation limit is exceeded. Color Video on Twisted Pairs Using Single Supply The circuit shown in Figure 4 can be used to drive in excess of 25 meters length of twisted pair cable with no loss of reso- lution or picture definition when driving a NTSC monitor at the load end. DS012348-93 FIGURE 3. Waveform across a 100 Ω Load www.national.com 15 |
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