FIGURE 1: SCHEMATIC DIAGRAM TABLE 1: ELECTRICAL SPECIFICATIONS AT 25 OC ISDN U SMD ISOLATION TRANSFORMER. PARAMETER MIN. TURNS RATIO: 6-10 : 5-1 (SEC :PRI) -------- PRIMARY INDUCTANCE (5-1): VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ 26.0 PRIMARY DC BIAS CURRENT THD < 70dB 0.0 PRIMARY LEAKAGE INDUCTANCE: VOLTAGE = 0.250Vrms FREQUENCY = 10 KHZ -------- SPEC LIMITS TYP. MAX. 1 : 1.25 29.5 -------105 -------- + 3% 33.0 mHy 40.0 150 WHITE DOT DENOTES PIN #1 UNITS 1 10 PRI #1B PRIMARY (LINE SIDE) mA 7.50 7.50 Ohms Ohms LONGITUDINAL BALANCE OF PRI. 1KHz TO 4 KHz 4KHz TO 160 KHz -60 -58 -80 -70 --------------- dB dB Cw/w @ 10KHz (FULL PRI TO SEC) -------- 50.0 100.0 pF -------- -------- Vac HI-POT: 50/60Hz PRIMARY TO SECONDARY SEC #1A 6 1500 NOTE: 1) PRIMARY CENTER TAP IS FORMED BY CONNECTING PIN#2 TO PIN#4 FIGURE 2: RECOMENNDED PCB LAYOUT DIMENSIONS IN INCHES (mm) FIGURE 2: PHYSICAL DIMENSIONS IN INCHES, (mm) 7 6 .800 (20.32) .050 (1.27) PIN #1 WHITE DOT 1 2 3 4 SECONDARY (CHIP SIDE) 5 6.30 6.32 8 4 PRI #1A --------------- 9 8 µHy DCR: EACH HALF OF PRIMARY (2-1 & 5-4) SECONDARY (6-10) 10 SEC #1B 2 .150 (3.81) 1 10 5 6 .100 (2.54) 5 .520 (13.20) MAX .530 (13.46) MAX CORE TAPED P PM-IU15 M YYWW .480 (12.19) MAX .010 (0.25) .100 (2.54) .028 (0.70) 1 2 3 4 .028 (0.7) MIN 5 .52 (13.2) EP13, SMD 10 9 8 7 .590 (15.00) MIN .787 (20.00) MAX .787 (20.00) MAX REV. 04/08/96 05/20/96 06/04/96 6 P Premier M Magnetics Inc. UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES DIMENSIONAL TOLERANCES ARE: DECIMALS ANGLES .XX + .05 + 0 O 30' .XXX + .010 DO NOT SCALE DRAWING DESCRIPTION OF CHANGES ORIGINAL RELEASE CORRECTED INDUCTANCE RANGE. UPDATED RECOMMENDED PCB LAYOUT, NO OTHER CHANGES ISDN U TRANSFOMER CONTROL DRAWING PREMIER P/N: PM-IU15 REVISION: 06/04/96 DRAWN BY: TOM O'NEIL REF: SCALE: NONE SHEET: 1 OF 3