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ICS1893AGLF датащи(PDF) 27 Page - Integrated Circuit Systems |
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ICS1893AGLF датащи(HTML) 27 Page - Integrated Circuit Systems |
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27 / 135 page ![]() Chapter 6 Interface Overviews ICS1893AG, Rev. A 04/14/05 April, 2005 27 ICS1893AG Data Sheet - Preliminary Copyright © 2005, Integrated Circuit Systems, Inc. All rights reserved. 6.3.2 Twisted-Pair Receiver Interface Figure 6-2 shows the design for the ICS1893AG twisted-pair receiver interface. • Two 56.2Ω 1% resistors are in series, with the center bypassed to ground with a 0.1µF bypass capacitor. • No bypass capacitor is used with the receive transformer center tap. • A 4.7-pF capacitor must be included across the ICS1893AG side of the receive transformer. Note: 1. Keep leads as short as possible. 2. Install the resistor network as close to the ICS1893AG as possible. Figure 6-2. ICS1893AG Receiver Twisted Pair TP_RXN 22 56.2 Ω 1% 0.1 µF 56.2 Ω 1% To RJ-45 1:1 System Ground Plane Chassis Ground Plane 75 Ω 0.1 µF 2 kV 4.7 pF Separate Ground Plane Center Tap ICS1893AG TP_RXP 21 |
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