PCA EPE6169G

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)
Insertion
Loss
(dB Max.)
Return
Loss
(dB Min.)
± 1.0
MHz
1-10
MHz
5-10
MHz
Xmit
Rcv
Xmit
Rcv
17
17
-1
-1
•
Xmit
Rcv
Common Mode
Rejection
(dB Min.)
Attenuation
(dB Min.)
@ 20
MHz
Xmit
-50
-50
-18
-35
Rcv
-18
Xmit
Rcv
Xmit
Rcv
@ 1-10
MHz
-----
-35
-11
Rcv
@ 200
MHz
----30 -----30
Isolation : meets or exceeds 802.3 IEEE Requirements • Characteristic Filter Impedance : 100 Ω •
• *Referenced to the filter output @ 5 MHz for filter only, excluding resistor network •
-18
Xmit
@ 100
MHz
Rcv
-5
Rcv
@ 50
MHz
Xmit
-7
Xmit
@ 40
MHz
Rcv
-18
Rcv
@ 30
MHz
Xmit
-18
Xmit
@ 25
MHz
Crosstalk
(dB Min.)
-30
Schematic
7
316Ω
Transmit Channel
Receive Channel
3
53.6Ω
6
LPF
5
8
49.9Ω
100Ω
2
9
49.9Ω
1:1
53.6Ω
4
10
316Ω
Chip Side
N
Pad
Layout
Q
P
M
D
E
C
K
L
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
12
Media Side
Dimensions
J
B
F
14
1:1
Package
PCA
EPE6169G
Date Code
100Ω
1
N
H
LPF
Chip Side
Media Side
A
Pin 1
I.D.
13
Dim.
Min.
A
B
C
D
E
F
G
H
I
J
K
L
M
N
P
Q
.780
.510
.074
.595
.003
.097
.660
.017
.008
.090
0°
.025
---------
(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
I
G
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 7.5Ω representing the four 7.5Ω 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 (Ω), balanced and well coupled to
achieve minimum radiation from these traces.
Typical Application Circuit for UTP PC Card
TX+
TXd+
Card Bus
PHY
TXTXdRX+
RX-
TX+
6
8
1
7
9
2 TX-
5
14
3
4
13
6
RX4
1
3
RJ45*
RX+
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