T-1274G Datasheet, PDF (1/1 Pages) Rhombus Industries Inc. – ADSL Line Interface Transformer

PARAMETER
TURNS RATIO (10-7) : (9-6) 1 : 1 +1%
Tie7-9, (10-6) : (1-5) 2.2 : 1 +1%
Inductance ¹
3.0 +6%
Leakage Inductance ²
10.0 Max.
DCR Pins 10 -7
1.26 Max
DCR Pins 9 - 6
1.26 Max
UNITS
mH
µH
Ω
Ω
ADSL Line
Interface
Transformer
Designed to meet supplementary insula-
tion requirements of IEC950 for working
voltage of 250 Vrms
DCR Pins 1 - 5
0.66 Max
Ω
THD ³
-70
dB
Longitudinal Balance
at 20 kHz to 250 kHz
55 Min.
dB
Interwinding Capacitance
100 Max
pF
Schematic Diagram
PRI SEC
10
1
7
9
Isolation
1 to 10, (tie 7-9)
2050
VAC
6
5
1. Tested @ 10 kHz and 1.0 VAC (Pins 10-6) With 7-9 shorted, and
100mADC.
2. Tested @ 100 kHz and 100 mVAC (Pins 10-6) With7-9, 1-5 shorted.
3. Tested @ 40kHz - 1.65VrmsVAC across Pri, 28 ohm load, 135 ohm
input, tie (7-9)
Operating temperature range -40^oC to + 85^oC
.522
(13.26)
MAX.
.516
(13.1)
MAX.
.100
(2.54)
.028
(0.70)
.025
(0.64)
Physical Dimensions
inches (mm)
.532
(13.51)
MAX.
.516
(13.1)
.675 (17.15)
.663 (16.85)
.715
(18.15)
10
1
9
2
Suggested
Pad Layout
3
7
4
6
5
.100
(2.54)
TYP.
.100
(2.54)
TYP.
.050
(1.27)
TYP.
Rhombus
Industries Inc.
Transformers & Magnetic Products
Rhombus P/N:
Cust. P/N:
Date: 9/13/99
T-1274G
Name:
Sheet:
1 of 1
www.rhombus-ind.com
15801 Chemical Lane,
Huntington Beach, CA 92649-1595
Phone: [phone] z FAX: [phone]