ETAL P3156

PRODUCT DATA SHEET
ULTRA LOW DISTORTION
LOW PROFILE LINE MATCHING
TRANSFORMER
Features
Applications
∗
∗
∗
∗
∗
∗
∗
∗
∗
∗ V.90 and V.92 modems
∗ Line matching
Ultra Low Distortion
Lead-free (Pb-free)
RoHS compliant
Low Profile (11mm)
Extended Frequency Response
IEC 60950 and UL 60950 certified
UL Recognized Component
Flat TX and RX Responses
High Thermal Stability
P3156
DESCRIPTION
P3156 is intended for data communications to V.90
and V.92 (56kbps) data rates. P3156 is specifically
designed to be matched to both 600 ohm and
complex impedance telephone lines, using a
minimum of external components, with very flat TX
and RX frequency responses.
P3156 has extended flat frequency response from
30Hz to 4kHz with very low levels of signal distortion
at signal frequencies as low as 150Hz.
ETALDOC 500/11
Page 1 of 4
P3156 also exhibits stable characteristics over its
operating temperature range to maximize data
throughput
under
varying
environmental
conditions without the need for modem retraining.
P3156 is certified to IEC 60950 and UL 60950.
P3156 is a UL Recognized Component and is
supported by an IEC CB Test Certificate. The part
is completely lead-free, compliant with RoHS
Directive 2002/95/EC, and suitable for lead-free
and conventional processing.
February 2006
P3156
SPECIFICATIONS
Electrical
At T = 25ºC and as circuit Fig. 2 unless otherwise stated.
Parameter
Conditions
Min
Typ
Max
Units
Insertion Loss
f = 2kHz, RL = 510Ω
-
4.8
-
dB
Frequency Response
LF -3dB cutoff
HF -3dB cutoff
100Hz - 4kHz
-
10
8
-
±0.2
Hz
kHz
dB
Return Loss
200Hz - 4kHz
14
-
-
dB
-
-
-90
dBm
-
-77
-
dBm
80
-
-
dB
-
-
10
65
Vrms
Vpeak
3.88
5.5
-
-
kVrms
kV
-25
-40
-
-
+85
+125
95
ºC
ºC
%R.H.
-
280
-
Ω
-
20
-
mH
10mV 200Hz
-
14
-
H
10mV 200Hz
12
-
-
kΩ
Distortion
(1)
0dBm in line, 3rd Harmonic
f = 600Hz
-3dBm in line, 3rd Harmonic
f = 150Hz
Balance
DC - 5kHz
Saturation
Excitation 50Hz
250Vrms.
Output voltage
across line
Voltage
isolation(2)
50Hz
DC
Operating range:
Functional
Storage
Humidity
Ambient temperature
Lumped equivalent circuit parameters as Fig. 1
DC resistance, RDC(3)
Sum of windings
Leakage inductance ΔL
(4)
Shunt inductance Lp
(4)
Shunt loss Rp
Notes
1. Third harmonic typically exceeds other
harmonics by 10dB.
2. Components are 100% tested at 6.5kV DC.
3. Caution: do not pass DC through windings.
Telephone line current, etc. must be diverted
using 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.
ETALDOC 500/11
Page 2 of 4
Equivalent Circuit
Fig 1
IDEAL
1:1
LINE
MODEM
February 2006
P3156
MATCHING RECOMMENDATIONS
600Ω MATCH
EUROPEAN CTR21 COMPLEX MATCH
Recommended Circ uit
Recommended Circ uit
Fig 2
Fig 3
600
150nF
22μ F
270
33nF
LINE
33nF
22μ F
750
360
68nF
120nF
750
LINE
In practice the 360Ω load resistor in figure 2 will
connect to a low output impedance TX driver. The
33nF capacitor on the load side should appear in
parallel with the 360Ω resistor (rather than in
parallel with the transformer winding) to obtain flat
TX response to line.
Figure 3 gives flat RX and TX responses against
the complex reference impedance (typically ±0.5dB
30Hz - 4kHz) with return loss better than 15dB.
In practice, the 750Ω load resistor will connect to
a low output impedance TX driver.
The 120nF
capacitor, which should have a temperature stable
dielectric, should appear in parallel with the 750Ω
resistor (rather than in parallel with the
transformer winding) to obtain flat TX response to
line.
For recommended matching to other reference
impedances please contact Profec Technologies.
CONSTRUCTION
e2
Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mmØ.
Windings may be used interchangeably as primary or secondary.
ETALDOC 500/11
Page 3 of 4
February 2006
P3156
SAFETY
CERTIFICATION
Constructed in accordance with IEC 60950-1:2001,
EN60950-1:2001 and UL 60950-1 First Edition,
supplementary insulation, 250Vrms maximum
working voltage, flammability class V-0.
Distances through solid insulation 0.4mm
minimum.
Certified under the IEC CB scheme (Certificate
DK-9431) to IEC 60950-1:2001, sub-clauses 1.5,
1.5.1, 1.5.2, 1.7, 1.7.1, 2, 2.9, 2.9.1, 2.9.2, 2.9.3,
2.10, 2.10.1, 2.10.2, 2.10.3, 2.10.3.1, 2.10.3.3,
2.10.4, 2.10.5, 2.10.5.1, 2.10.5.4, 4, 4.7, 4.7.1,
4.7.3, 4.7.3.1, 4.7.3.4, 5, 5.2, 5.2.1, and 5.2.2 for a
maximum working voltage of 250Vrms, nominal
mains supply voltage not exceeding 300Vrms and
a maximum operating temperature of 85ºC in
Pollution Degree 2 environments, supplementary
insulation, including national differences for
Denmark, Finland, Germany, Norway, Sweden,
Switzerland, USA, Canada and UK.
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.
ABSOLUTE MAXIMUM RATINGS
COPYRIGHT
(Ratings of components independent of circuit).
Short term isolation voltage (2s)
4.6kVrms,
6.5kVDC
DC current
100μA
Storage temperature
-40ºC to
+125ºC
Lead temperature, 10s
260ºC
ETAL and P3156 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.
© 1997-2006 Profec Technologies Ltd.
Reproduction prohibited.
E203175
ETAL Group Oy, Kuormatie 14, FIN-03101, Nummela
Telephone: +358 (0)20 7500 330
Fax: +358 (0)20 7500 333
Website: www.etalgroup.com
Email: etalgroup@egruppen.com
ETALDOC 500/11
Page 4 of 4
ISO 9001
FM 25326
February 2006