B0726-EL

Document 443 ADSL Transformers The B0726-E and C1350-A ADSL transformers have been approved by Broadcom for use with their BCM6335, BCM6338, BCM6345, and BCM6348 ADSL CPE Modem chipsets and their BCM6301 5-Volt Line Driver. These transformers feature split windings for chip receive, chip transmit and line side. They offer 1875 Vrms For Broadcom ADSL CPE Modem chipsets isolation, low DC resistance, low leakage inductance and excellent total harmonic distortion. Their compact design makes them suitable for high density applications. Coilcraft can also custom design transformers to meet your specific requirements. For free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Interwinding Turns ratio capacitance4 (pF) chip tx : chip rx chip tx : line 22.0 1 : 4.25 1 : 4.25 Part number1 B0726-EL_ ADSL Inductance2 Annex ±5% (µH) A 400 DCR max (Ohms) 0.815 (1 – 3) (2 – 4) 0.232 (5 – 7) (6 – 8) 0.831(16 – 11) (14 – 9) 0.815 (1 – 3) (2 – 4) 0.232 (5 – 7) (6 – 8) 0.831 (16 – 11) (14 – 9) Leakage inductance3 max (µH) 18.0 THD5 typ (dB) -95.0 C1350-AL_ B 100 18.0 22.0 1 : 4.25 1 : 4.25 -93.0 1. When ordering, please specify a packaging code: Packaging: C1350-ALD D = 13″ machine ready reel. EIA-481 embossed plastic tape (200 per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. 2. Inductance measured at 10 kHz, 0.1 Vrms, 0 Adc between pins 9 and 16 with pins 11 and 14 connected. 3. Leakage inductance measured at 100 kHz, 0.1 Vrms between pins 9 and 16 with all other pins shorted. 4. Capacitance tested between pins 1 and 16 with all other pins shorted. 5. Total harmonic distortion measured at 30 kHz. 6. Operating temperature range −40°C to +85°C. 7. Electrical specifications at 25°C 5 0.500 max 12,70 9 Chip transmit 0.650max 16,51 0.590 14,99 0.004 / 0,10 7 6 14 11 Line side Recommended Land Pattern 0.134 3,40 0.067 1,70 1 0.039 1,00 8 1 16 1 16 0.550 max 13,97 8 9 0.020 (12×) 0,51 0.201 5,10 0.067 1,70 Chip receive 3 2 0.134 3,40 0.099 2,51 0.099 2,51 0.670 17,02 4 Weight: 6.1 – 6.3 g Terminations: Tin-silver over tin over nickel over phos bronze Tape and reel: 200/13″ reel 44 mm tape width For packaging data see Tape and Reel Specifications section. Specifications subject to change without notice. Please check our website for latest information. Document 443 Revised 10/08/08 © Coilcraft, Inc. 2008