EPF8018G [PCA]
10/100 LAN Interface Module for NIC/HUB Card Applications, Mini Package; 10/100 LAN接口模块NIC / HUB卡应用，迷你包
| 型号： | EPF8018G |
| 厂家： | 
PCA ELECTRONICS INC. |
| 描述： | 10/100 LAN Interface Module for NIC/HUB Card Applications, Mini Package |
| 文件： | 总2页 (文件大小：64K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
10/100 LAN Interface Module for
NIC/HUB Card Applications, Mini Package
E L E C T R O N I C S I N C .
EPF8018G
• Guaranteed to operate with 8 mA DC bias at 70°C on cable side •
• Complies with or exceeds IEEE 802.3, 10 BT/100 BX Standards •
Electrical Parameters @ 25° C
OCL
@ 70°C
Insertion Loss
Return Loss
(dB Min.)
Common Mode Rejection
Crosstalk (dB Min.)
[Between Channels]
(dB Max.)
(dB Min.)
10-100
MHz
100 KHz, 0.1 Vrms
8 mA DC Bias
1-80
MHz
80-100
MHz
100-150
MHz
1-30
MHz
30-60
MHz
60-100
MHz
30-100
MHz
200-500
MHz
5-10
MHz
100-200
MHz
Cable Side
Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv Xmit Rcv
-1 -1 -1 -1 -3.5 -3 -18 -18 -12 -12 -10 -10 -45 -45 -30 -30 -15 -15
-40
350µH
-40
•
Isolation : 1500 Vrms
•
Cable Impedance : 100 Ω
•
Rise Time : 3.0 nS Max. •
Schematic
Receive Channel
Transmit Channel
RD+
1
7
RX+
TD+ 15
11 TX+
CT
3
2
CT 14
RD-
6
5
RX-
CT
TD- 16
10 TX-
12 CT
1:1
2 :1
Dimensions
Package
(Inches)
Dim. Min. Max. Nom.
(Millimeters)
Min. Max. Nom.
A
A
B
C
D
E
F
G
H
I
.780
.290
.223
.700
.003
.100
.350
.016
.008
.045
0°
.800
.310
.243
Typ.
.020
Typ.
.370
.022
.012
Typ.
8°
19.81 20.321
12.95 3.46
N
J
5.66
6.17
17.78 Typ.
0.076 .508
Pin 1
I.D.
PCA
Pad
EPF8018G
Date Code
B
E
Q
K
2.54
8.89
.406
.203
1.14
0°
Typ.
9.40
.559
.305
Typ.
8°
Layout
P
J
D
M
K
L
M
N
P
Q
.025
.045
.635
1.14
.030
.100
.092
.410
.762
2.54
C
2.34
17.78
L
I
G
H
F
CSF8018Ga Rev. 1 11/26/96
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
Product performance is limited to specified parameters. Data is subject to change without prior notice.
10/100 LAN Interface Module for
NIC/HUB Card Applications, Mini Package
E L E C T R O N I C S I N C .
EPF8018G
The circuit below is a guideline for interconnecting PCA’s EPF8018G with QSI6611 and QSI6612 chip set for 10/100 Mb/s
applications. Further details can be obtained from the chip manufacturer application notes.
Typical insertion loss of the isolation transformer is 0.5dB. This parameter covers the entire spectrum of the encoded
signals in 10/100 protocols. Under terminated conditions, to transmit a 2V pk-pk signal across the cable, you must adjust
the chips supporting resistor to get at least 2.12V pk-pk across the transmit pins.
It is recommended that system designers do not use the receiver side center tap to ground, via a capacitor. This may
worsen EMI, specifically if the secondary “common mode termination” is pulled to chassis ground as shown.
The phantom resistors shown around the 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.
The “common mode termination” load of 75 Ω shown from the center taps of the secondary may be taken to chassis ground
via a cap of suitable value. This depends upon user’s design, EMI margin etc.
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 0.05 inches away from the chip side pins of EPF8018G. There need not be any ground plane beyond
this point.
For best results, PCB designer should design the outgoing traces preferably to be 50 Ω, balanced and well coupled to
achieve minimum radiation from these traces.
Typical Application Circuit for UTP
+5V
1
2
3
6
4
5
7
8
10
11
7
Xmit
Rcv
TD+
TD-
16
6
15
14
QSI66
11
or
QSI66
12
RJ45*
50Ω
50Ω
75Ω
75Ω
12
5
1
2
RD+
RD-
25Ω
25Ω
High Voltage
Capacitor
Node
Pinout
EPF8018G
Chassis
Ground
CM Capacitor
Notes : * NIC Side is shown. Hub side connection will have crossover swapping pins 1-2 & 3-6.
CSF8018Gb Rev. 1 11/26/96
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
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