T PL IA N M CO *R oH S Features Applications ■ Optimized for extended reach ■ Twisted pair coax conversion ■ Fast and easy installation ■ ■ Service interoperability and compatibility ■ Triple Play with most existing NIDs HPNA ■ xDSL service extension on COAX ■ UL Listed per 1863 ■ RoHS compliant* 3670 Series Balance-Unbalance Adapter Bourns® Model 3670-01 is a high quality impedance matching unit optimized to extend reach/reduce loss on ADSL2+ and VDSL2 circuits where conversion from twisted pair to existing coaxial cabling is required. The 3670-01 is configured with flying leads for connection of the twisted pair circuit so no new wires are required. Dual mounting flanges provide flexibility in installation. Characteristics Twisted Wire Port Impedance.................................................................................................................. 100 Ω Coax Port Impedance .............................................................................................................................. 75 Ω Withstanding Voltage ............................................................................................................................... DC 330 V, 2 sec. (Ico=10 mA) Insulation Resistance .............................................................................................................................. >10 MΩ (DC 250 V) Insertion Loss (typical)............................................................................................................................. 0.55 dB @ 25 kHz 0.13 dB @ 138 kHz 0.22 dB @ 3.75 MHz 0.28 dB @ 5.8 MHz 0.35 dB @ 8.5 MHz Return Loss (Typical ................................................................................................................................ 7.83 dB @ 25 kHz 21.47 dB @ 138 kHz 29.49 dB @ 3.75 MHz 32.13 dB @ 5.8 MHz 31.92 dB @ 8.5 MHz Insertion Loss 0 COAXIAL Attenuation (dB) -0.5 TWIST WIRE 50 OHM 75 OHM VM 3670-01 50 OHM – 100 OHM -1 -1.5 -2 -2.5 10k 100k 1M 10M 30M Frequency (Hz) Return Loss 50 45 100 OHM COAXIAL 3670-01 TEST EQUIPMENT 75 OHM RETURN LOSS REFERENCE IMPEDANCE 40 Attenuation (dB) TWIST WIRE 35 30 25 20 15 10 5 0 10k 100k 1M Frequency (Hz) *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 10M 30M 3670 Series Balance-Unbalance Adapter Product Dimensions Installation Diagram Wiring Schematic for BALUN: The BALUN is intended to be used in a UL listed NID enclosure Circuit shows BALUN connected to “DATA” port of the splitter. 155 OR 455 PROTECTOR 22.78 (0.8970) FROM C.O. VOICE DATA SPLITTER 85122 58.42 (2.3000) COAXIAL 18.42 (0.7250) BALUN PRODUCT LABEL POTS TO “DIPLEXER” AND/OR “SET TOP BOX” How to Order DIMENSIONS: MM (INCHES) Stud Mount .......................Part No. 3670-01, 50 units per carton Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com REV. B 11/15 Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.