etaldoc 500/11 page 1 of 4 february 2006 product data sheet ultra low distortion P3156 low profile line matching transformer features applications ? ultra low distortion ? v.90 and v.92 modems ? lead-free (pb-free) ? line matching ? rohs compliant ? low profile (11mm) ? extended frequency response ? iec 60950 and ul 60950 certified ? ul recognized component ? flat tx and rx responses ? high thermal stability description P3156 is intended for data communications to v.90 and v.92 (56kbps) data rates. P3156 is specifically designed to be matched to both 600 ohm and complex impedance telephone lines, using a minimum of external components, with very flat tx and rx frequency responses. P3156 has extended flat frequency response from 30hz to 4khz with very low levels of signal distortion at signal frequencies as low as 150hz. P3156 also exhibits stable characteristics over its operating temperature range to maximize data throughput under varying environmental conditions without the need for modem retraining. P3156 is certified to iec 60950 and ul 60950. P3156 is a ul recognized component and is supported by an iec cb test certificate. the part is completely lead-free, compliant with rohs directive 2002/95/ec, and suitable for lead-free and conventional processing. http://
P3156 etaldoc 500/11 page 2 of 4 february 2006 specifications electrical at t = 25oc and as circuit fig. 2 unless otherwise stated. parameter conditions min typ max units insertion loss f = 2khz, r l = 510 - 4.8 - db frequency response lf -3db cutoff hf -3db cutoff 100hz - 4khz - - - 10 8 - - - 0.2 hz khz db return loss 200hz - 4khz 14 - - db distortion (1) 0dbm in line, 3rd harmonic f = 600hz -3dbm in line, 3rd harmonic f = 150hz - - - -77 -90 - dbm dbm balance dc - 5khz 80 - - db saturation excitation 50hz 250vrms. output voltage across line - - - - 10 65 vrms vpeak voltage isolation (2) 50hz dc 3.88 5.5 - - - - kvrms kv operating range: functional storage humidity ambient temperature -25 -40 - - - - +85 +125 95 oc oc %r.h. lumped equivalent circuit parameters as fig. 1 dc resistance, r dc (3) sum of windings - 280 - leakage inductance l - 20 - mh shunt inductance lp (4) 10mv 200hz - 14 - h shunt loss rp (4) 10mv 200hz 12 - - k notes 1. third harmonic typically exceeds other harmonics by 10db. 2. components are 100% tested at 6.5kv dc. 3. caution: do not pass dc through windings. telephone line current, etc. must be diverted using semiconductor line hold circuit. 4. at signal levels greater than 100mv, lp will increase and rp will decrease slightly but the effect is usually favourable to the return loss characteristic. equivalent circuit ideal 1:1 li ne modem fi g 1
P3156 etaldoc 500/11 page 3 of 4 february 2006 matching recommendations in p r actice th e 360 : lo ad r e sistor in fig u re 2 w ill c o nnec t to a low o u t put imp e dan c e tx d r iv er. th e 3 3 n f c apac ito r on th e loa d s i de s h o u l d a ppear i n p a ralle l w i th t h e 360 : r e s i s t or (ra t her th a n i n p a ralle l w i th the transfor m er w i nd ing ) to ob t a in fla t tx resp on se to lin e. fi g u r e 3 g i ves f l a t r x a n d tx re sp on se s a g a i n s t th e c o mplex refere n c e im peda n c e (typic ally 0.5d b 3 0 hz - 4 k hz ) w i th r e t u r n lo s s be t t e r than 15 db. in p r ac tic e , the 75 0 : lo a d res i s t o r w ill c onne c t to a l o w outpu t imp e danc e tx d r iv e r . th e 12 0 n f c a pa c i t o r, w h ic h s hould h a v e a tempe r at ure s t ab l e di e l e c t r i c , s h o u l d a p p ea r i n p a r al l el wi t h t h e 75 0 : re s i s t or (rather th a n i n parall e l w i th t h e tra n s f or m e r w i nding ) to o b ta in f l at tx re s pons e t o line. fo r re c o mmend ed ma t c h i ng to o t her refere n c e i m p e d an c e s pl e a s e c o nt a c t p r of e c t e c h n o l o gi e s . c o n s tructio n dimensio ns show n are in m illim etre s ( i nch e s). g e om e t ric c e n t r e s of ou tlin e and pi n grid c o inc i d e w i th in a tole r anc e c i r c le o f 0 . 6 mm?. windings ma y b e us ed in t e rc ha n g eably a s primary or s e c o ndary. r e c o m m e n de d c i r c u i t fi g 2 360 li ne 60 0 33 nf 33 nf p 22 f 600 m a tch : european ctr21 complex match re c o m m e n d e d c i r c u i t fi g 3 750 line 270 750 120nf 68nf 150nf p 22 f e 2
P3156 etaldoc 500/11 page 4 of 4 february 2006 safety certification constructed in accordance with iec 60950-1:2001, en60950-1:2001 and ul 60950-1 first edition, supplementary insulation, 250vrms maximum working voltage, flammability class v-0. distances through solid insulation 0.4mm minimum. certified under the iec cb scheme (certificate dk-9431) to iec 60950-1:2001, sub-clauses 1.5, 1.5.1, 1.5.2, 1.7, 1.7.1, 2, 2.9, 2.9.1, 2.9.2, 2.9.3, 2.10, 2.10.1, 2.10.2, 2.10.3, 2.10.3.1, 2.10.3.3, 2.10.4, 2.10.5, 2.10.5.1, 2.10.5.4, 4, 4.7, 4.7.1, 4.7.3, 4.7.3.1, 4.7.3.4, 5, 5.2, 5.2.1, and 5.2.2 for a maximum working voltage of 250vrms, nominal mains supply voltage not exceeding 300vrms and a maximum operating temperature of 85oc in pollution degree 2 environments, supplementary insulation, including national differences for denmark, finland, germany, norway, sweden, switzerland, usa, canada and uk. recognized under the component recognition program of underwriters laboratories inc. to us and canadian requirements can/csa c22.2 no. 60950-1-03/ul60950-1, first edition, based on iec 60950-1, first edition, maximum working voltage 250vrms, pollution degree 2, reinforced insulation. ul file number e203175. additionally, profec technologies certifies all transformers as providing voltage isolation of 3.88kvrms, 5.5kv dc minimum. all shipments are supported by a certificate of conformity to current applicable safety standards. absolute maximum ratings copyright (ratings of components independent of circuit). short term isolation voltage (2s) 4.6kvrms, 6.5kvdc dc current 100 a storage temperature -40oc to +125oc lead temperature, 10s 260oc etal and P3156 are trade marks of profec technologies ltd. the trade mark etal is registered at the uk trade marks registry. profec technologies ltd. is the owner of the design right under the copyright designs and patents act 1988 and no rights or licences are hereby granted or implied to any third party. ? 1997-2006 profec technologies ltd. reproduction prohibited. etal group oy, kuormatie 14, fin-03101, nummela telephone: +358 (0)20 7500 330 fax: +358 (0)20 7500 333 website: www.etalgroup.com email: etalgroup@egruppen.com fm 25326 iso 9001 e203175
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