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: [email protected] ETALDOC 500/11 Page 4 of 4 ISO 9001 FM 25326 February 2006