15801 Chemi cal Lane, Huntington Beach, CA 92649
Phone: ( 714) 898-0960
FAX: (714) 896-0971
Rhombus
Transformers & Magnetic Products
Industries Inc.
9
7
1
4
2
5
Designed for HDSL applications
Compatible with Brooktree BT8921
& BT8970 at 1168kbs.
Custom versions of this
transformer are available.
A Surface Mount version of this
transformer is available
SCHEMATIC DIAGRAM:
PIN POSITION GRID 0.100 (2.54)
HOLES FOR BOBBI N PINS
Line Side Pins 1-4 + 2-5
Device Side Pins 9-7
www.rhombus-ind.com
4/5/99
Physical Dimensions
in inches (mm)
123
4
5
10
9
876
Tested at 10 kHz - 0. 1VAC
PARAMETER UNITS
Turns Ratio 2 : 1 +
1%
Inductance (Line Side)
1
2.0 +6% m H
Leakage Inductance
1
11.0 Max
µ
H
Longitudinal Balance
40 kHz to 300 kHz 50 m in. d B
Primary DC Resistance 2.5 Max.
Ω
Secondary DC Resistance 1.0 Max.
Ω
Frequency Response +
0.1 dB
33kHz - 110kHz
Insertion Loss @ 40kHz 0.5 Max. dB
Rs=135
Ω
R
L
=32
Ω
Isolation (HI-POT) 2050 V
RMS
Primary DC 160 mA
Return Loss @ 40kHz - 300kHz 16.5 min. dB
T HD 70 Min. dB
(20 KHz, 4.5Vp-p
)
T-1298
HDSL TRANSFORMER
Designed to meet UL1950 and EN60950
reinforced insulation for a working
voltage of 150V and supplementary
insulation for a working voltage of 300V.
PRI.
SEC.