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ISL59440 Folha de dados(PDF) 11 Page - Intersil Corporation |
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ISL59440 Folha de dados(HTML) 11 Page - Intersil Corporation |
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11 / 12 page  11 FN6162.2 October 10, 2007 PC Board Layout The frequency response of this circuit depends greatly on the care taken in designing the PC board. The following are recommendations to achieve optimum high frequency performance from your PC board. • The use of low inductance components such as chip resistors and chip capacitors is strongly recommended. • Match channel-channel analog I/O trace lengths and layout symmetry. This will minimize propagation delay mismatches. • Maximize use of AC de-coupled PCB layers. All signal I/O lines should be routed over continuous ground planes (i.e. no split planes or PCB gaps under these lines). Avoid vias in the signal I/O lines. • Use proper value and location of termination resistors. Termination resistors should be as close to the device as possible. • When testing use good quality connectors and cables, matching cable types and keeping cable lengths to a minimum. • Minimum of 2 power supply de-coupling capacitors are recommended (1000pF, 0.01µF) as close to the device as possible - Avoid vias between the cap and the device because vias add unwanted inductance. Larger caps can be farther away. When vias are required in a layout, they should be routed as far away from the device as possible. • The NIC pins are placed on both sides of the input pins. These pins are not internally connected to the die. It is recommended these pins be tied to ground to minimize crosstalk. ISL59440 |
Nº de peça semelhante - ISL59440_07 |
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Descrição semelhante - ISL59440_07 |
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