PRODUCT DATA SHEET P2883 ADSL TRANSFORMER Features Applications ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ADSL Ultra-low profile, 7mm IEC 950 certified Supplementary Insulation Lead-free (Pb-free) RoHS compliant Excellent frequency characteristics Low distortion Use as 1:1 or 2:1 ratio Vacuum encapsulated DESCRIPTION P2883 is a microprofile transformer for ADSL applications requiring safety isolation to international standards. P2883 is certified to safety standards IEC 950 for supplementary insulation, 250V working voltage. The ADSL requirements for good balance and frequency response, with low levels of distortion are achieved in a miniature package with a high level of safety insulation. The part is compliant with RoHS Directive 2002/95/EC, and suitable for lead-free and conventional processing. ETALDOC 720/9 Page 1 of 4 August 2007 P2883 SPECIFICATIONS Electrical At T = 25ºC and reference circuit Fig. 1 unless otherwise stated. The convention used in this datasheet is that 'primary' windings are on the line side and 'secondary' windings are on the equipment side. Parameter Conditions Min Typ Max Units Turns ratio (3-5)+(4-6):(2-1) 0.98 1.00 1.02 Primary inductance 3-6, 30kHz, 1V 25 40 - mH DC resistance 3-5 and 4-6 1-2 - 1.8 1.2 - Ω Ω Interwinding capacitance 1 & 2 linked: 3, 4, 5, 6 linked - 30 - pF Leakage inductance 3-6 (1-2 shorted) - 5 12 µH Insertion loss 500kHz - 0.25 - dB Frequency response 30kHz - 1.1MHz - ±0.1 - dB Phase response 30kHz - 1.1MHz - ±5 - degrees Longitudinal balance 30kHz - 1.1MHz 40 - - dB Return loss 30kHz - 500kHz 500kHz - 1.1MHz 1.1MHz - 2MHz 20 14 10 18 14 - dB dB dB Total Harmonic Distortion 4Vrms 30kHz - 1.1MHz - - -80 dBc Voltage isolation 50Hz DC 2.12 3.0 - - kVrms kV Operating range: Functional Storage Ambient temperature 0 -40 - +70 +125 ºC ºC 50 1 100 6 4 0.1µF LINE 5 50 2 ETALDOC 720/9 3 Page 2 of 4 August 2007 P2883 Notes: 1. The 0.1µF capacitor is fitted to block DC. It may be placed, as an alternative, in either leg of the line pair. 2. If desired, the transformer may be reversed so that the split winding is on the equipment side. 3. To effect a 1:2 step up to line, connect as shown in Fig. 2. The ratio between the two halves of the split winding is exactly 1.00:1.00 by design, and paralleling the windings is thus always acceptable. 12 6 1 100 0.1µF 4 LINE 5 12 3 2 CONSTRUCTION Fig 3 Mechanical Specification e3 Dimensions shown are in millimetres (inches). Geometric centres of outline and pin grid coincide within a tolerance circle of Ø0.6mm. Recommended PCB hole size Ø0.8mm. Terminal pins electroplated pure tin (Sn) 5µm minimum, JESD97 Category = e3. ETALDOC 720/9 Page 3 of 4 August 2007 P2883 SAFETY ABSOLUTE MAXIMUM RATINGS Constructed in accordance with IEC 950:1991, supplementary insulation, 250Vrms working. CERTIFICATION (Ratings of components independent of circuit). Short term isolation voltage (1s) 2.12kVrms 3.0kVDC Storage temperature -40ºC to +125ºC Lead temperature, 10s 260ºC COPYRIGHT Certified to IEC 950:1991/A4:1996 (IEC CB Test Certificate No. GB541W) sub-clauses 2.2.2, 2.9.2, 2.9.3, 2.9.4, 2.9.6, 2.9.7, 4.4, 4.4.3.2 (class V-0) and 5.3 for a maximum working voltage of 250Vrms, nominal mains supply voltage not exceeding 300Vrms and a maximum operating temperature of +70ºC in Pollution Degree 3 environment, supplementary insulation. Additionally, Profec Technologies certifies all transformers as providing voltage isolation of 2.12kVrms, 3kV DC minimum. All shipments are supported by a Certificate of Conformity to current applicable safety standards. ETAL and P2883 are Trade Marks of Profec Technologies Ltd. The Trade Mark and Service Mark ETAL are 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. © 1999 and 2007 Profec Technologies Ltd. Reproduction prohibited. 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: [email protected] ETALDOC 720/9 Page 4 of 4 August 2007