Part Turns Ratio OCL Line Side CW/WLLPackage/
Number (Pri:Sec ±2%) (mH MIN) (pF MAX) (µH MAX) Schematic
TX RX
EXTENDED TEMPERATURE RANGE MODEL – OPERATING TEMPERATURE -40°C TO +85°C
TX9027 1:2 1:2 1.2 30 .5 QTERA
T691.A (8/04)
T1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port SMT Transformer Modules with
IC Side Protection
Electrical Specifications @ 25°C
1:2 401
VG
VG
VG
VG
1:2
1:2
1:2
1:2
1:2
1:2
1:2
392
383
374
365
356
347
338
329
3110
3011
2912
2813
2714
2615
2516
2417
2318
2219
2120
CHIP SIDE
LINE SIDE
Eight transformers in a low profile surface mount package
Includes IC Side Protection Circuit on each channel to
suppress low voltage transients
Compatib le with PMC-Sierra’s PM 4329 HDLIU
Low DCR
Patented “Interloc k Base” construction for high reliability
Minimum Isolation voltage: 1500 Vrms
0° 8°
.485
12,32
40X .045
1,14
.285 MAX
7,24
.004/0,10
40 Surfaces .010
0,25
TX9027
DATE CODE
COUNTRY OF ORIGIN
1.125 MAX
28,58
.640 MAX
16,26
.950
24,13
40X .018
0,46 19X .050
1,27 SUGGESTED PAD LAYOUT
40X .090
2,29
40X .030
0,76
.480
12,1
9
.050
1,27
19X .050 = .950
1,27 24,13
Mechanical Schematic
QTERA
Weight...............5.0 grams
Tape & Reel ..........250/reel
Tube......................15/tube
NOTE: The crosstalk attenuation is typically 50 dB or better.
Dimensions: Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
US 858 674 8100
••
UK 44 1483 401 700
••
France 33 3 84 35 04 04
••
Singapore 65 6287 8998
••
Taiwan 886 2 2698 0228
••
Hong Kong 852 2788 6588
••
http://www.pulseeng.com
T1/CEPT/ISDN-PRI TRANSFORMER
Quad Port SMT Transformer Module with
IC Side Protection
1. Flammability — Materials used in the products are recognized
as UL94-VO approved. Products meet the requirements of
IEC 695-2-2 (Needle Flame Test).
2. Balance Characteristics — The transformers meet the require-
ments for longitudinal balance of FCC part 68.
3. Common Mode Rejection Ratio — the CMRR for all transformers
is better than 50 dB at 1 MHz. A typical test circuit is shown below.
4. Crosstalk Attenuation — In the dual packages, which contain
transmit and receive transformers side by side, sufficient crosstalk
attenuation is achieved by the inherent characteristics of the toroid
cores as well as by their proper positioning. The crosstalk attenua-
tion is typically 50 dB or better from 100 kHz to 10 MHz. This
result was established with the test circuit shown below.
5. Return Loss — ITU-T G.703 and European national regulatory
documents specify minimum return loss levels. The transformers
will allow these limits to be complied within the situations where
they are applicable.
Frequency 50-100 kHz 100 kHz-2 MHz 2-3 MHz
Return Loss
XMIT 9 dB 15 dB 11 dB
REC 12 dB 18 dB 14 dB
6. Surge Voltage Capability – All transformers and chokes
meet surge voltage tests according to the most stringent
regulatory documents when system designs include the proper
voltage and current suppression devices.
7. Isolation Voltage — 100% of transformers are tested during
production to the specified isolation voltage level.
8. General Information — The TX9027 is specifically designed for
use in 1.544 Mbps (T1), 2.048 Mbps (CEPT) and ISDN Primary
rate (PRI) interface applications. Use of the proper transformer
allows the interface circuit to comply with ITU-T G.703 and other
standards regarding pulse waveform, return loss, and balance.
HP-8751A
P1 P2
50:100
BALUN 100:50
BALUN
XFMR
50:100
BALUN
100:50
BALUN
XFMR
HP-8751A
P1 P2
100
100
Application Notes
UNITED STATES
(Worldwide)
12220 World Trade Drive
San Diego, CA 92128
U.S.A.
http://www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
UNITED KINGDOM
(Northern Europe)
5 Huxley Road
Surrey Research Park
Guildford, Surrey GU2 5RE
United Kingdom
TEL: 44 1483 401700
FAX: 44 1483 401701
FRANCE
(Southern Europe)
Zone Industrielle
F-39270
Orgelet
France
TEL: 33 3 84 35 04 04
FAX: 33 3 84 25 46 41
TAIWAN, R.O.C.
(Northern Asia)
3F-4, No. 81, Sec. 1
HsinTai Wu Road
Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
SINGAPORE
(Southern Asia)
150 Kampong Ampat
#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
HONG KONG
(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
6 Wong Chuk Yeung Street
Fotan, Shatin, Hong Kong
TEL: 852 2788 6588
FAX: 852 2776 1055
DISTRIBUTOR
T691.A (8/04)
For More Information :
©2004, Pulse Engineering, Inc. All Rights Reserved.
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be products and/or registered trademarks of their respective owners.
