PARAMETER
Turns Ratio
Line Impedance
Inductance (Line Side)
1 : 1 +1%
143
40 Min
UNITS
T-998
DDS Aplications
Pulse Transformers
Designed to meet the requirements
of Bellcore TR-NWT-000499,
Synchronous Digital Data
Interface-64 Kbps and Subrates
Recomended for use with level
one LXT441
Custom versions of this
transformer are available.
A Surface Mount version of this
transformer is available
Compatible with Level One
transceiver ICs
SCHEMATIC DIAGRAM:
1
10
3
8
6
Ω
mH
µH
Ω
Ω
dB
Leakage Inductance 10 kHz - 0.5V
RMS
40 Max.
Primary DC Resistance
Secondary DC Resistance
Frequency Response
1 kHz - 200 kHz
Insertion Loss @ 10kHz
Isolation (HI-POT)
Primary DC
Return Loss @ 1 kHz - 200 kHz
2.9 Typ.
5.9 Typ.
1.0 Max.
0.5 Typ.
1875
0
15 Typ.
dB
V
RMS
mA
dB
dB
dB
pF
Longitudinal Balance 200 - 1000 Hz 40 Typ.
15 kHz
35 Typ.
Interwinding Capacitance
10 kHz - 1 V
RMS
.625
(15.88)
65 Max.
.625
(15.88)
5
Primary
Secondary
.545
(13.84)
MAX.
PIN POSITION GRID 0.100 (2.54)
HOLES FOR BOBBIN PINS
.160
(4.06)
TYP.
.118
(3.00)
.100
(2.54)
TYP.
.048
(1.22)
Pin Diameter is 0.025 (0.64)
10
6
Bottom
View
Physical Dimensions
in inches (mm)
1
5
4/15/98
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
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