For other values & Custom Designs, contact factory.
Specifications subject to change without notice.
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
Rhombus
Industries Inc.
19
DDS - 2/98
PIN POSITION GRID 0.100 (2.54)
HOLES FOR BOBBIN PINS
HOLES FOR CLIPS
T-997 & T-998: EP13 Package
Bottom
View
1
5
610
T-710: RS-1408 Package
Physical Dimensions
Inches (mm)
Designed to meet the requirements
of Bellcore TR-NWT-000499,
Synchronous Digital Data
Interface-64 Kbps and Subrates
Compatible with Level One
transceiver ICs
Low Profile "Touch Tone" Designs
Surface Mount Designs
Parameter T-710 T-997 * T-998 * Units
Turns Ratio 1:1
+
1% 1:1 + 1% 1:1 + 1%
Pri. Impedance 100
Ω
on Sec. 135 135 143
Ω
Longitudin al Balance 200 - 1000 Hz 60 min. 40 typ. 40 typ. dB
15 kHz 40 min. 35 typ. 35 typ. d B
Pri. DC Resistance 19.5 max. 18.2 typ. 2.9 typ.
Ω
Sec. DC Resistance 19.5 max. 18.2 typ. 5.9 typ.
Ω
Frequency Response 100Hz - 112kHz 1.0 typ. 1.0 typ. --- dB
Frequ ency Response 1 kHz - 200kHz --- -- - 1.0 max. dB
Insertion Loss 10 kHz 1.25 max. 1.25 typ. 0.50 typ. dB
Isolation (HI-POT) 1500 1875 1875 V
RMS
Primary DC 0 0 0 mA
Inductance 1 kHz & 1V
RMS
200 min. 200 min. 40 min. m H
Leakage Inductan ce 10 kHz & 0.5V
RMS
43 max. 60 max. 40 max.
µ
H
Inte rwindin g Capacitan ce 10 kHz & 1V
RMS
65 max. 65 max. 65 max. pF
Return Loss 100Hz to 100kHz 15 min. 15 typ. --- dB
Return Loss 1 kHz - 200kHz --- - -- 15 typ. d B
Package Type RS14X8 EP13 * EP13 *
Electrical Specifications at 25
O
C
DDS Applications
Pulse Transformers
6
5
4
3
1
T-710
SCHEMATIC
1
3
5
10
8
6
T-997 & T-998
SCHEMATIC
PRI.
SEC.
PRI.
SEC.
T-710 & T-997 Recommended for use with Level One LXT400 & LXT456
T-998 Recommended for use with Level One LXT441
* Surface Mount Version Available for T-997 & T-998.
Add suffix "G" (i.e. T-997G or T-998G)
See EP13-SMD drawing page 21 (T-976G)
For Complete Details including
PDF Catalogs & Data Sheets on this
and other product families visit
www.rhombus-ind.com