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| 10 Base-T PC Card Module with Enhanced CMA and Resistor Network ELECTRONICS INC. EPE6169G * Recommended for ASIC PC Card PHY * * Robust construction allows for IR/VP processes * * Complies with or exceeds IEEE 802.3, 10 Base-T Requirements * Electrical Parameters @ 25 C Cut-off Frequency (MHz) 1.0 MHz Xmit 17 Rcv 17 Insertion Loss (dB Max.) 1-10 MHz Xmit -1 Rcv -1 * Return Loss (dB Min.) 5-10 MHz Xmit -18 Rcv -18 @ 20 MHz Xmit -7 Rcv -5 Attenuation (dB Min.) @ 25 MHz Xmit -18 Rcv -11 @ 30 MHz Xmit -35 Rcv -18 @ 40 MHz Xmit -35 Rcv -18 @ 50 MHz Xmit -30 Rcv Common Mode Rejection (dB Min.) @ 100 MHz Xmit Rcv @ 200 MHz Xmit Rcv ----Crosstalk (dB Min.) @ 1-10 MHz Xmit -50 Rcv -50 ----30 -----30 Isolation : meets or exceeds 802.3 IEEE Requirements * Characteristic Filter Impedance : 100 * * *Referenced to the filter output @ 5 MHz for filter only, excluding resistor network * Schematic 7 6 LPF 5 53.6 4 316 Chip Side A N J 1:1 10 Media Side 316 53.6 8 100 9 Transmit Channel 3 49.9 2 49.9 1 Chip Side LPF 1:1 13 100 14 12 Media Side Receive Channel Package Dim. Min. .780 .510 .074 .595 .003 .097 .660 .017 .008 .090 0 .025 --------- Dimensions (Inches) Max. Nom. .800 .530 .084 .605 .010 .103 .680 .022 .013 .100 8 .045 --------.790 .520 .079 .600 .005 .100 .670 .020 .011 .095 4 .040 .030 .200 .085 .700 (Millimeters) Min. Max. Nom. 19.81 12.96 1.88 15.11 .076 2.46 16.76 .432 .203 2.29 0 .635 --------20.32 13.46 2.13 15.37 .254 2.62 17.27 .559 .330 2.54 8 1.14 --------20.07 13.21 2.01 15.24 .127 2.54 17.02 .508 .279 2.41 4 1.02 .762 5.08 2.16 17.78 N Pin 1 I.D. PCA EPE6169G Date Code B Q Pad Layout P D E C M K L I A B C D E F G H I J K L M N P Q H F G PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSE6169Ga Rev. Orig 9/28/98 Product performance is limited to specified parameters. Data is subject to change without prior notice. TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com 10 Base-T Interface Module with Enhanced CMA and Resistor Network ELECTRONICS INC. EPE6169G The circuit below is a guideline for interconnecting PCA's EPE6169G with an ASIC requiring Sonic-T type resistors. Further details of system design, such as chip pin-out, etc. can be obtained from the specific chip manufacturer. Typical insertion loss of the isolation transformer/filter is 0.7dB. This parameter covers the entire spectrum of the encoded signals in 10 Base-T protocols. However, the predistortion resistor network introduces some loss which has to be taken into account in determining how well your design meets the Standard Template requirements. A quick calculation of the effective Thevenin's termination impedance for the filter follows: R(termination)= 2(53.6//316)92. Thus, when measuring the return loss of these parts on the bench, it is necessary to provide a shunting resistor of approximatively 7.5 representing the four 7.5 output signal sources. The phantom resistors shown around the RJ45 connector have been known to suppress unwanted radiation that unused wires pick up from the immediate environment. Their placement and use are to be considered carefully before a design is finalized. It is recommended that there be a neat separation of ground planes in the layout. It is generally accepted practice to limit the plane off at least 0.08 inches away from the chip side pins of EPE6169G. There need not be any ground plane beyond this point. For best results, PCB designer should design the outgoing traces preferably to be 50 (), balanced and well coupled to achieve minimum radiation from these traces. Typical Application Circuit for UTP PC Card TX+ TXd+ 6 7 5 4 1 3 8 9 14 13 1 TX+ 2 TX3 6 RX+ RX4 Card Bus PHY TXTXdRX+ RX- RJ45* 5 7 8 EPE6169G 12 10 Chassis Ground Notes : * Pin-outs shown are for NIC configurations. PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSE6169Gb Rev. 2 9/28/98 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com |
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