PRODUCT DATA SHEET LINE MATCHING TRANSFORMER Features Applications ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ Industry Standard Lead-free (Pb-free) RoHS compliant 12.6mm (0.5") seated height Vacuum encapsulated IEC 60950 and UL 60950 Certified UL Recognized Component Centre-tap winding P2602 V.32bis and V.22bis modems Line Matching Passive hybrids Instrumentation Fax / modems Voice DESCRIPTION P2602 is a variant of industry standard P1200 with one centre-tapped winding. P2602 meets international safety standards, being vacuum encapsulated and 100% tested to withstand 6.5kV DC. The part is completely lead-free, compliant with RoHS Directive 2002/95/EC, and suitable for lead-free and conventional processing. P2602 is specifically designed to be easily matched to both 600 ohm and complex impedance telephone lines, using a minimum of external components. P2602 is certified to IEC 60950 and UL 60950. P2602 is a UL Recognized Component and is supported by an IEC CB Test Certificate. P2602 is ideal for voice telecommunications applications and for data communications to V.32 bis (14,400 bits/second) data rates. With care, P2602 may be used for V.34 applications to 28,800 bits/second. ETALDOC 258/8 Page 1 of 4 February 2006 P2602 SPECIFICATIONS Electrical At T = 25ºC and as circuit fig. 2 unless otherwise stated. Parameter Conditions Min Typ Max Units Insertion Loss f = 2kHz, RL = 560Ω - - 1.5 dB Frequency response LF-3dB cutoff HF-3dB cutoff 200Hz - 4kHz 10 - - 50 ±0.2 Hz kHz dB Return Loss 200Hz - 4kHz 18 - - dB Third Harmonic Distortion (1) 450Hz 0dBm - -72 -60 dBm Balance DC – 5kHz Method TG25 80 - - dB - - 10 65 V rms V peak 3.88 5.5 - - kVrms kV -25 -40 - +85 +125 ºC ºC 120 - 148 Ω 14.5 - 18 mH Saturation Excitation 50Hz 250V rms. Output voltage across line Voltage isolation (2) 50Hz DC Operating range: Functional Storage Ambient temperature Lumped equivalent circuit parameters as Fig. 1 DC resistance, RDC (3)(5) Sum of windings Leakage inductance ΔL Shunt inductance Lp (4) 10mV 200Hz 10mV1kHz 2.8 - 8 2 - H H Shunt loss Rp (4) 10mV 200Hz 10mV 1kHz 5 7 - - kΩ kΩ Notes 1. Third harmonic typically exceeds other harmonics by 20dB. 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 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. 5. Resistance imbalance between the two ETALDOC 258/8 Page 2 of 4 Equivalent Circuit Fig. 1 ½ ΔL ½ RDC ½ RDC ½ ΔL IDEAL 1:1 February 2006 P2602 halves of the tapped winding will not be greater than 5Ω. MATCHING RECOMMENDATIONS 600Ω MATCH EUROPEAN CTR21 COMPLEX MATCH Recommended Circ uit Recommended Circ uit Fig. 2 Fig. 3 600 + 50% 6.8μF _ 20% * 150nF 270 27nF +_ 5% LINE 33nF +_ 5% 560 +_ 2% 750 2.2μF (150nF) 100nF 56nF 750 (680) 150 (220) LINE * If return loss > 16dB, 300Hz - 4kHz is ac ceptable, bloc king capacitor may be relaxed to 4.7μF +_ 50% 20% Figure 3 gives flat RX and TX responses against the CTR21 complex reference impedance (typically around ±0.5dB 300Hz - 3.4kHz). Return loss is typically better than 20dB. The circuit values in parentheses give optimum flatness at a small sacrifice in return loss. For circuits with existing board drillings, figure 4 gives good return loss (>20dB) and RX flatness against the CTR21 complex reference impedance, but TX flatness is degraded by the use of this topology. Fig. 4 150nF 270 750 LINE 2.2μF 68nF 330 27nF 820 CONSTRUCTION e2 ETALDOC 258/8 Page 3 of 4 February 2006 P2602 Dimensions shown are in millimetres (inches). Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mm ETALDOC 258/8 Page 4 of 4 February 2006 P2602 SAFETY CERTIFICATION Constructed in accordance with IEC 60950-1:2001, EN 60950-1:2001 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, ETAL 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 (1s) 4.6kVrms, 6.5kV DC DC polarizing current 100μA Storage temperature -40ºC to +125ºC Lead temperature, 10s 260ºC E203175 ETALDOC 258/8 ETAL, P1200 and P2602 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. © 1996 - 2006 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] Page 5 of 4 ISO 9001 FM 25326 February 2006