REV. Status PRELIMINARY 02/03/00 MP IMINARY PRE HDSL transformer designed for use with Brooktree HDSL IC chips BT8921/BT8970 at 1168kbps rates A. Electrical Specifications (@ 25C) Primary (Line side) Impedance; 1350 Secondary (IC side) Impedance; 320 Longitudinal Balance; 50dBm MIN @ 40KHz TO 300KHz, OdBm Frequency Response; +0.1dB @ 33KHz to 110KHz, OdBm, 40Khz reference Insertion Loss; 0.5dB MAX @ 40KHz, OdBm Total Harmonie Distortion; 7OdB MAX @ 20KHz, 1.85Vrms Primary Open Circuit Inductance; 2.0mH +10% @ 10KHz, 0.1Vrms Measured (15) with 2 and 4 shorted 8. Leakage Inductance; 114%H MAX @ 100KHz, 0.1Vrms Measured (15) with 2 & 4, and 7 & 9 shorted 9. DC Current; 160mA 10. DC Resistance; (1-4)=1.250 +10% (25)=1.250 +10% (7-9)=1.250 +10% 11. Turns Ratio; (14):(2-5)=1:1.0042% (7-9):(1-5)=1:2.0042% 2 & 4 shorted 12. Dielectric Strength; 1875Vrms 1 second @ Pri to Sec White dot B. Marking; TTC4021, TAMURA, date code and country of origin indicates C. Safety; Complies with UL1950 3rd Edition and IEC950 Pin 1 D. Schematic; PRI SEC Line Side IC Side 17.75[0.699 MAX l [oaeto.ossine isa 4 [ son oea34IN 7 a 5 2.50[0.098]TYP E. Mechanical Specifications; MODEL NUMBER ITTC4021| NogPpWN> Date Code 15.50[0.610]MAX -15.50[0.610]MAX 17.00[0.670]MAX jo AP a fH AG | 17.80[0.699]MAX B 2.50[0.098]TYP _e PREPARED BY: 5 6 D. Rund ENGINEER: Oe a eaag REV HDSL M._Pitchai acap\rTo\ari23401.0We [PRE TRANSFORMER TTC4021 QUALTY CONTROL cowrents oF Tus orawna anc|TANMURA CORPORATION OF AMERICA| MODEL SPECIFICATION D. Kelley PRIOR NOTICE 43352 aan Sa DANE. EMEA CA. G2 500-6624 DIM: mm(In} SCL: 2/1 | SH: 10 1 APPROVED: J. Coleman PROPRIETARY NOTICE: THIS DRAWING PRINT OR DOCUMENT AND SUBJECT MATTER DISCLOSED HEREIN ARE PROPRIETARY ITEMS TO WHICH TAMURA RETAINS THE EXCLUSIVE RIGHT OF DISSEMINATION, REPRODUCTION, MANUFACTURE AND SALE. THIS DRAWING, PRINT OR DOCUMENT IS SUBMITTED IN CONFIDENCE FOR CONSIDERATION BY THE RECIPIENT ALONE UNLESS PERMISSION FOR FURTHER DISCLOSURE IS EXPRESSLY GRANTED IN WRITING.