PARAMETER
Turns Ratio
1
Inductance
2
Longitudinal Balance
20 kHz to 600 kHz
Primary DCR (Pins 7-9)
Secondary DCR (Pins 5-2 or 4-1)
Frequency Response
40kHz - 300kHz
Insertion Loss @ 100kHz
Isolation (HI-POT)
Primary DC
Return Loss @ 100kHz
THD
(10 KHz, 4.95V
RMS
)
1 : 2.3 +3%
1.75 +8%
UNITS
T-1318G
HDSL2
TRANSFORMER
Designed for HDSL2 applications
Compatible with Level One
SK70740/41/42
Low Profile "Touch Tone" design
mH
50 min.
2.9 Max.
3.6 Max.
+0.2
dB
Ω
Ω
dB
0.3
3000
160
16.5 min.
-75 Min.
dB
V
RMS
mA
dB
dB
SCHEMATIC DIAGRAM
7
8
9
5
2
4
1
Line Side Pins 5 - 2, 4 - 1
Chip Side Pins 7 - 9
Primary is Chip Side
Secondary is Line Side
1. Chip Side : Line Side (Short pins 2 & 4).
2. Line Side, Pins (1-5) with 2,4 shorted@ 10KHz and 100 mV
Operating Temp. Range -40
0
C to +85
0
C
Surge Voltage Capability:
Metallic Voltage: 800 V peak, 10/700
µS
Longitudinal Voltage: 2400 V peak, 10/560
µS
1
2
3
1.070
(27.18)
REF. .900
(22.86)
REF.
Top View
10
9
8
7
6
.570
(14.48)
MAX.
.040
(1.02)
TYP.
.920
(23.37)
MAX.
.150
(3.81)
TYP.
1.19
(30.23)
.150
(3.81)
.080
(2.03)
.180
(4.57)
4
5
.470
(11.94)
MAX.
.090
(2.29)
TYP.
1.10 (27.94)
1.04 (26.42)
Physical Dimensions
in inches (mm)
Notch on bobbin indicates pin #1
12/19/00
Rhombus
Industries Inc.
Transformers & Magnetic Products
15801 Chemical Lane, Huntington Beach, CA 92649
Phone: (714) 898-0960
FAX: (714) 896-0971
www.rhombus-ind.com