P2782TR [ETAL]
MICROPROFILE LINE MATCHING TRANSFORMER; MICROPROFILE线路匹配变压器
| 型号： | P2782TR |
| 厂家： | 
ETAL Group |
| 描述： | MICROPROFILE LINE MATCHING TRANSFORMER |
| 文件： | 总6页 (文件大小：113K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRODUCT DATA SHEET
MICROPROFILE LINE
MATCHING TRANSFORMER
P2782
Features
Applications
∗ Surface Mount
∗ Lead-free (Pb-free)
∗ RoHS compliant
∗ Telecommunications
∗ V.22bis modems
∗ Line matching
∗ 7mm seated height
∗ Portable computers
∗ Instrumentation
∗ Vacuum encapsulated
∗ IEC 60950 and UL 60950 certified
∗ UL Recognized Component
∗ Centre-tapped winding
DESCRIPTION
P2782 is a microprofile transformer with one
centre-tapped winding for applications where high
performance and safety isolation to international
standards are required in an extremely small case
size.
At moderate transmit power levels (e.g. -10dBm)
performance to V.32bis may be achieved.
In instrumentation applications, the P2782 offers a
wideband frequency response from 50Hz to
40kHz.
Designed specifically as a surface mount device, the
P2782 features a 7mm seated height and is vacuum
encapsulated and tested to 6500VDC. The part is
compliant with RoHS Directive 2002/95/EC, and
suitable for lead-free and conventional placement
and reflow.
P2782 is certified to IEC 60950 and UL 60950.
P2782 is a UL Recognized Component, and is
supported an IEC CB Test Certificate.
Despite the subminiature size, the performance is
the equal of that of much larger components. The
P2782 offers reinforced insulation, is ideal for voice
telecommunications and for data communications to
V.22bis (2,400 bits/second), and can be matched to
both 600Ω and complex impedance telephone lines.
ETALDOC 354/10
Page 1 of 5
October 2007
P2782
SPECIFICATIONS
Electrical
At T = 25°C and as circuit Fig. 1 unless otherwise stated.
Parameter
Conditions
Min
Typ
Max
Units
Insertion Loss
-
-
-
-
2.0
4.0
dB
dB
f = 2kHz, RL = 600Ω
f = 2kHz, RL = 430Ω
Frequency response
-3dB LF cutoff
-3dB HF cutoff
200Hz - 4kHz
-
-
-
50
40
-
-
-
Hz
kHz
dB
±0.2
Return Loss
Distortion (1)
200Hz - 4kHz
18
-
-
dB
f = 450Hz
0dBm in line
3rd Harmonic
-
-60
-
-54
-
dBm
dB
Balance
DC - 5kHz
Method TG25
80
Saturation
Excitation 50Hz
250Vrms
Output voltage
across line
-
-
-
-
10
65
Vrms
Vpeak
Voltage
50Hz
DC
3.88
5.5
-
-
kVrms
kV
Isolation (2)
Operating range:
Functional
Ambient temperature
-
-
-
+85
+125
95
°C
°C
%R.H.
-25
-40
-
Storage (6)
Humidity
Lumped equivalent circuit parameters as Fig. 1
(3) (5)
Sum of windings
205
4.2
-
-
245
4.9
Ω
mH
DC resistance, RDC
Leakage
inductance ΔL
Shunt
10mV 200Hz
10mV 1kHz
1.4
-
-
3.5
-
H
H
inductance Lp(4)
1.8
Shunt loss Rp(4)
10mV 200Hz
10mV 1kHz
5
-
-
10
15
-
kΩ
kΩ
ETALDOC 354/10
Page 2 of 5
October 2007
P2782
Notes
1. Third harmonic typically exceeds other
harmonics by 20dB.
Equivalent Circuit
2. Components 100% tested at 6.5 kVDC.
3. Caution: do not pass DC through windings.
Telephone line current, etc. must be diverted
using choke or semiconductor line hold circuit.
4. At signal levels greater than 100mV, Lp will
increase and Rp will decrease slightly but the
effect is usually favourable to the return loss
characteristic.
Fi g 1
IDEAL
1:1
5. Resistance imbalance between the two halves of
the tapped winding will not be greater than 7Ω.
6. Excludes shipping materials. Components are
dry-packed and sealed as shipped. Handle in
accordance
with
IPC/JEDEC
J-STD-033
procedure for components classified as
IPC/JEDEC J-STD-020Moisture Sensitivity Level
5a.
ETALDOC 354/10
Page 3 of 5
October 2007
P2782
PERFORMANCE
600 MATCH
Ω
Recommended Circuit
Re tu rn Lo ss
Fi g 4
Fi g 2
-14
-18
6.8μF 20%*
600
430
+_
6.8nF
+_
6.8nF
5%
dB
-22
LINE
+_
2%
5%
Worst Ca se
Typical
-26
-30
*
If return loss > 16dB, 300Hz - 4kHz is acceptable, blocking
+ 50%
100Hz 200 300 500
1kHz
Frequency
2
3
4 5
10
capacitor may be relaxed to 4.7 μF
_
20%
Frequency Response
Third Harmonic Distortion vs. Signal Level
Fi g 3
Fi g 5
-60
Fundamental
450Hz
Typical
0
-65
-70
-0.1
dB
-0.2
-0.3
-75
-0.4
-80
100Hz 200 300 500
1kHz
Frequency
2
3
4 5
10
-10
-5
0
-15
Fundamental Power (dBm)
Note:
Frequency response driven by terminal
equipment (voltage scource with 430 series
resistance) measured across 600 is within
To obtain harmonic distortion power in dBm, add
fundamental power in dBm to third harmonic in
dBc e.g. at -10dBm power in line at 450Hz, third
harmonicpoweris-10+(-74)=-84dBmtypical.
Ω
Ω
±0.2dB200Hz to4kHz
Recommended Circuit
Recommended Circuit
Fig 6
Fi g 7
The circuit of Fig. 6 gives good TX and RX
flatness (±0.3dBm 200Hz - 4kHz). An
alternative arrangement, using existing PCB
sites, is shown in Fig. 7. Note, however, that TX
flatness will be degraded withthe topology.
ETALDOC 354/10
Page 4 of 5
October 2007
P2782
CONSTRUCTION
Connections
Dimensions
Fig 8
2.542.54
(0.1)(0.1)
ig
F
9
13.0 max
(0.51)
e3
1
2
3
6
5
4
9.0 max
(0.36)
7.0 max
(0.28)
1.77
(0.07)
1.32
(0.052)
1.5
(0.06)
Tolerance ± 0.3mm
Terminals electroplated pure tin (Sn) 5µm minimum
JESD97 category = e3.
Terminal size : 1.5 (0.06) long, 1.32 (0.05) wide
Dimensions shown are in millimetres (inches)
NOTE:
Dimensions shown are in millimetres (inches).
Geometric centres of outline and pad grid coincide within a tolerance circle of 0.3mmØ.
Observe correct orientation in circuit.
ABSOLUTE MAXIMUM RATINGS
COPYRIGHT
(Ratings of components independent of circuit).
ETAL and P2782 are Trade Marks of Profec
Technologies Ltd.
The Trade Mark ETAL is registered at the UK
Trade Marks Registry.
Profec Technologies Ltd. is the owner of the
design right under the Copyright Designs and
Patents Act 1988 and no rights or licences are
hereby granted or implied to any third party.
Short term isolation voltage (2s)
4.6 kVrms,
6.5kVDC
DC current
100μA
Storage temperature
-40°C to
+125°C
Soldering temperature
Profile peak
British Patent No. 2283195
US Patent No. 5879598
260°C
10s
Recommended peak body temperature 245°C in
accordance with IPC/JEDEC J-STD-033.
European Patent No. 0725719
© 1994 - 2005 Profec Technologies Ltd.
Reproduction prohibited.
ETALDOC 354/10
Page 5 of 5
October 2007
P2782
SAFETY
CERTIFICATION
Manufactured from materials conforming to
flammability requirements of UL94V-0.
Distance through reinforced insulation 0.4mm
minimum.
Creepage and clearances in circuit are 7mm
minimum where PCB pads do not exceed 3mmØ.
Certified by BSI to IEC 60950 Third Edition
(1999) (IEC CB Test Certificate No. GB592W)
sub-clauses 1.5, 1.5.1, 1.5.2, 2.9, 2.9.1, 2.9.2,
2.9.3, 2.9.4, 2.9.5, 2.10, 2.10.1, 2.10.2, 2.10.3,
2.10.3.1, 2.10.3.2, 2.10.4, 2.10.5, 2.10.5.1,
2.10.7, 2.10.8, 4.7, 4.7.3, 4.7.3.1, 4.7.3.4,
(Flammability Class V-0) ,5.2, 5.2.1, and 5.2.2 for
a maximum working voltage of 250Vrms, nominal
mains supply voltage not exceeding 250Vrms
and a maximum operating temperature of +85°C
in Pollution Degree 2 environment, reinforced
insulation.
Construction
complies
with
IEC 60950-1,
EN 60950-1 and UL 60950-1, reinforced insulation,
250Vrms maximum working voltage.
Recognized under the Component Recognition
Program of Underwriters Laboratories Inc. to US and
Canadian
requirements
CAN/CSA
C22.2
No. 60950-1-03/UL60950-1, First Edition, based on
IEC 60950-1, First Edition, maximum working
voltage 250Vrms, Pollution Degree 2, reinforced
insulation.
UL File number E203175.
Additionally, Profec Technologies certifies all
transformers as providing voltage isolation of
3.88kVrms, 5.5kV DC minimum. All shipments
are supported by a Certificate of Conformity to
current applicable safety standards.
ORDERING CODE
P2782
TR = Tape and Reel
(Blank) = Bulk in tubes.
Carrier tape width 24mm,
500 parts per 13” reel.
ISO 9001
FM 25326
E203175
ETAL Group Oy, Kuormatie 14, FIN-03101, Nummela
Telephone: +358 (0)20 7500 330
Website: www.etalgroup.com
Fax: +358 (0)20 7500 333
Email: etalgroup@egruppen.com
ETALDOC 354/10
Page 6 of 5
October 2007
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