RHOMBUS-IND T-997G

DDS Applications
Pulse Transformers
Compatible with Level One
transceiver ICs
Low Profile "Touch Tone" Designs
Surface Mount Designs
Electrical Specifications at 25OC
Parameter
Turns Ratio
T-710
T-997 *
T-998 *
1:1 + 1%
1:1 + 1%
1:1 + 1%
135
135
143
100 Ω on Sec.
Pri. Impedance
Longitudinal Balance
200 - 1000 Hz
15 kHz
Pri. DC Resistance
Sec. DC Resistance
Frequency Response
100Hz - 112kHz
Frequency Response
1 kHz - 200kHz
Insertion Loss
10kHz
Ω
40 typ.
35 typ.
40 typ.
35 typ.
dB
dB
19.5 max.
18.2 typ.
2.9 typ.
Ω
19.5 max.
18.2 typ.
5.9 typ.
Ω
1.0 typ.
1.0 typ.
---
dB
---
---
1.0 max.
dB
1.25 max.
1.25 typ.
0.50 typ.
dB
1500
1875
1875
VRMS
0
0
0
mA
Primary DC
1 kHz & 1VRMS
200 min.
200 min.
40 min.
mH
10 kHz & 0.5VRMS
43 max.
60 max.
40 max.
µH
10 kHz & 1VRMS
65 max.
65 max.
65 max.
pF
Return Loss
100Hz to 100kHz
15 min.
15 typ.
---
dB
Return Loss
1 kHz - 200kHz
---
---
15 typ.
dB
RS14X8
EP13 *
EP13 *
Leakage Inductance
Interwinding Capacitance
Package Type
T-710
SCHEMATIC
Units
60 min.
40 min.
Isolation (HI-POT)
Inductance
Designed to meet the requirements
of Bellcore TR-NWT-000499,
Synchronous Digital Data
Interface-64 Kbps and Subrates
PRI.
SEC.
6
3
5
4
1
T-997 & T-998
SCHEMATIC
PRI.
SEC.
1
10
3
8
5
6
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)
T-997 & T-998: EP13 Package
Physical Dimensions
Inches (mm)
T-710: RS-1408 Package
PIN POSITION GRID 0.100 (2.54)
HOLES FOR BOBBIN PINS
HOLES FOR CLIPS
10
6
Bottom
View
1
5
For Complete Details including
PDF Catalogs & Data Sheets on this
and other product families visit
www.rhombus-ind.com
Specifications subject to change without notice.
Rhombus
Industries Inc.
For other values & Custom Designs, contact factory.
19
DDS - 2/98
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960 • Fax: (714) 896-0971