REV. Status PRELIMINARY 02/23/00 MP PRELIMINARY HDSL transformer designed for use with Level One HDSL IC chips SK70706/SK70721 CO at 784, 528 and 400Kbps rates. wx N) A. Electrical Specifications (@ 25C) oA Oo 1. Primary (Line side) Impedance; 1350 = +t 2. Secondary (IC side) Impedance; 40.20 = 3. Longitudinal Balance; 50dBm MIN @ 40KHz TO 300KHz, OdBm id | (Per FCC part 68.310, pin 7 grounded) al O 4. Insertion Loss; 0.75dB MAX @ 100KHz, OdBm g 5. Total Harmonic Distortion; 80dB TYP @ 5KHz, 5Vpp - 6. Primary Open Circuit Inductance; 2.92mH 5% @ 10KHz, 1.0Vrms _ Measured (15) with 2 & 4 shorted 7. DC Current; 160mA 8. DC Resistance; (1-4)=2.110 410% (2-5)=2.119 +10% 10 (7-9)=2.639 +10% 9, Turns Ratio; (14):(25)=1:1.0042% (7-9):(1-5)=1:1.80+2% Date Code 2 & 4 shorted 10. Dielectric Strength; 1875Vrms 1 second @ Pri to Sec B. Marking; TTC4038, TAMURA, date code and country of origin C. Safety; Complies with UL1950 3rd Edition and IEC950 D. Schematic; White dot indicates Pin 1 Ri SEC Line Side IC Side 17.75[0.699 ]MAX 1 . wy .89[0.035]TYP 4 79 0.86[0. o34qryp- 7 1350 | 40.20 TT. 2 a 7 a a 5 2.50[0.098]TYP 7 E. Mechanical Specifications; 7. 15.50[0.610]MAX 15.50[0.610]MAX 17.00[0.670]MAX jt iF e Js CAL | 17.80[0.699]MAX B 2.50[0.098]TYP _ PREPARED BY: 5 6 D. Rund ENGINEER: OO ON ea REV HDSL M. Pitchai acap\Trc\atiz3e41.DWwe [PRE TRANSFORMER TTC4038 QUALITY CONTROL: CONTENTS OF THIS DRAWING ARE| TAMURA CORPORATION OF AMERICA MODEL SPECIFICATION SUBJECT TO CHANGE WITHOUT D. Kelley __ | PRIOR NOTICE 880? (200) 6991270. FAX BOSE /GadaZ | DIM: mm(In] SCL: 2/1 [sk 1 OF 1 APPROVED: PROPRIETARY NOTICE ys DRAWING PRINT OR AU AND reeset MAT MATTER APISCLOSED HEREIN ARE PROPRIETARY ITEMS TO WHICH TAMURA IVE _RIGHT OF DISSEMINATION, REPRO! RAWING, PRINT OR DOCUMENT IS SUBMITTED IN J. Coleman CONFIDENCE FOR CONSIDERATION BY THE RECIPIENT NONE U UNLESS P PERMISSION TOR FURTHER DISCLOSURE IS EXPRESSLY GRANTED IN WRITING.