15801 Chemical Lane, Huntington Beach, CA 92649
Phone: (714) 898-0960
FAX: (714) 896-0971
Rhombus
Transformers & Magnetic Products
Industries Inc.
PARAMETER UNITS
Turns Ratio 2 : 1 +
1%
Line Impedance 135 Ω
Inductance (Line Side) 3.0 +
6% mH
Longitudinal Balance
40 kHz to 200 kHz 53 min. dB
Primary DC Resistance 2.5 Max. Ω
Secondary DC Resista nce 1.0 Max. Ω
Frequency Response +
0.2 dB
40kHz - 300kHz
Insertion Loss @ 200kHz 0.4 dB
Isolation (HI-POT) 1500 V
RMS
Primary DC 160 mA
Return Loss @ 40kHz 20 min. dB
THD -70 Min. dB
(40 KHz, 14 dBm)
T-982G
HDSL
TRANSFORMER
Designed for HDSL applications
Compatible with Brooktree BT8921
& BT8970 at 784 kbps
Custom versions of this
transformer are available.
Physical Dimensions in inches (mm)
www.rhombus-ind.com
1/22/96
9
7
1
4
2
5
SCHEMATIC DIAGRAM:
Line Side Pins 1-4 + 2-5
Device Side Pins 9-7
.522
(13.26)
MAX.
.100
(2.54)
.028
(0.70)
.532
(13.51)
MAX.
.516
(13.1)
.6 75 (1 7.15)
.6 63 (1 6.85)
.516
(13.1)
MAX.
.025
(0.64)
8
7
6
.100
(2.54)
TYP.
.715
(18.15)
.050
(1.27)
TYP.
.100
(2.54)
TYP.
Suggested
Pad Layout
1
2
3
4
5
9
10