? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. ? coilcraft, inc. 2010 document 244-1 document 244-1 revised 10/20/10 these transformers have been designed to provide optimum performance with various adsl chip sets from analog devices. they feature a compact size, minimum dc resistance and very low leakage inductance. primary inductance is stable from -40c to +85c and the longitudinal balance is optimized for the best overall performance at the adsl transmission speed. most parts have been de- signed to meet ul 1950 requirements. for free evaluation samples or to discuss custom de- signs, please contact coilcraft. specifications 1. all electrical specifications referenced to line side. 2. operating temperature range -40c to +85c. 3. electrical specifications at 25c. line side leakage part inductance inductance dcr max (ohms) number style chip set (mh) max (h) chip side line side as7787-a leaded ad20msp910/918 co/cpe 5.0 10% 16 1.21 (10-8), 1.65 (9-7) 1.42 (1-3, 2-4) AS8456-A smt ad20msp910/918 co/cpe 5.0 10% 16 1.21 (10-8), 1.65 (9-7) 1.42 (1-3, 2-4) as8923-a leaded ad20msp930 co 2.03 min 7.5 0.60 (1-3, 2-4) 0.60 (10-8), 0.60 (9-7) as8908-a smt ad20msp930 co 2.03 min 7.5 0.60 (1-3, 2-4) 0.60 (10-8), 0.60 (9-7) as8925-a leaded ad20msp930 cpe 2.42 min 7.5 0.55 (1-3, 2-4) 0.58 (10-8), 0.58 (9-7) as8924-a smt ad20msp930 cpe 2.42 min 7.5 0.55 (1-3, 2-4) 0.58 (10-8), 0.58 (9-7) dielectric longitudinal thd part strength turns ratio capacitance balance @ 20 khz designed number (v) line:chip max (pf) min (db) typ (db) to meet as7787-a 1875 1:1 55 40 (20 khz ? 1.1 mhz) -89 ul 1459, 1950 AS8456-A 1875 1:1 55 40 (20 khz ? 1.1 mhz) -89 ul 1459, 1950 as8923-a 2300 1.1:1 40 (20 khz ? 1.1 mhz) -85 ul 1459, 1950 as8908-a 2300 1.1:1 40 (20 khz ? 1.1 mhz) -85 ul 1459, 1950 as8925-a 2300 1.2:1 40 (20 khz ? 1.1 mhz) -85 ul 1459, 1950 as8924-a 2300 1.2:1 40 (20 khz ? 1.1 mhz) -85 ul 1459, 1950 adsl transformers for analog devices chipsets this product is not rohs-compliant. contact coilcraft for current status or possible alternatives.
? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. ? coilcraft, inc. 2010 document 244-2 revised 10/20/10 document 244-2 adsl transformers for analog devices schematics a max b max c max d min e f typ g dia h dia 0.550 0.550 0.500 0.100 0.400 0.100 0.013 0.032 13,97 13,97 12,70 2,54 10,16 2,54 0,33 0,82 as7787-a, as8923-a, as8925-a AS8456-A, as8908-a, as8924-a recommended land pattern c b a b 10 10 1 1 5 5 6 6 10 1 5 6 a e f g d e ff h c g dot above pin1 recommended board layout a max b max c max e f typ g typ 0.530 0.699 0.500 0.590 0.098 0.050 0.061 13,46 17,75 12,70 14,99 2,50 1,27 1,55 33 44 88 77 11 22 10 10 99 line side line side chip side chip side as7787-a, AS8456-A as8923-a, as8908-a as8925-a, as8924-a packaging 50 parts per tray packaging as8908-a, as8924-a: 100 parts per tray AS8456-A: 175 per 13 reel. plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth
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