sonet/sdh dual line interface transformer for e4/stm-1 applications part turns ratio primary inductance leakage inductance interwinding capacitance dc resistance hipot number (5%) ocl (h min) l l c ww dcr (vrms min) @ 20m vrms, 100 khz (nh max) (pf max) ( w max) ST6200T 1 : 1 36.0 100 6.0 .30 1500 note: modules are packaged in tubes unless tape & reel packaging is specified. add the suffix ?-r? (such as ST6200T -r ) for tape & reel orders. tape & reel parts can only be ordered in multiples of 1000 pieces. preliminary a105.p (10/99) mechanical schematic ST6200T dimensions: inches mm unless otherwise specified, all tolerances are .010 0,25 electrical specifications @ 25c ? operating temperature -40c to +85c weight . . . . . . .1.0 grams (max) tape & reel . . . . . . . .1000/reel tube . . . . . . . . . . . . . . .42/tube compliant with itu-t/g.703 supports 139.264 (e4) and 155.52 (stm-1) mbps for coded mark inversion (cmi) interfaces designed to interface with level one?s lxt6155 for use with 75 w coaxial cable dual design supports transmit and receive circuitry designed for fast rise time and low signal distortion .457 max 11,61 .350 8,89 .260 max 6,60 .375 max 9,53 .068 max 1,73 pin 1 14x .050 1,27 .233 max 5,92 .003/.020 0,08/0,51 .004 / 0,102 16 surfaces ST6200T date code ctry origin rev suggested pad layout .221 5,61 .092 2,34 .405 10,29 .350 8,89 .050 1,27 .030 0,76 .020 min 0,51 0 - 8 16 15 t1 t2 14 1 2 3 6 7 8 11 10 9 u.s: 858 674 8100 u.k: 44 1483 401 700 france: 33 3 84 35 04 04 singapore: 65 287 8998 taiwan: 886 2 2698 0228 http://www.pulseeng.com
for more information : performance warranty of products offered on this data sheet is limited to the parameters specified. data is subject to change w ithout notice. other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. printed on recycled paper. ?1999, pulse engineering, inc. sonet/sdh dual line interface transformer for e4/stm-1 applications application notes: pulse has designed the ST6200T, sonet/sdh dual line interface transformer specifically for high-speed, stm-1/e4 serial data interfaces utilizing 75 w coax cable. the isolation transformer protects the station from static charges that may develop on the cable and prevents ground loop currents from being transferred between stations. these devices have also been designed to provide inherent common rejection within the transmission pass band and thus reduce emi. the high bandwidth of these devices minimizes data dependent jitter (ddj) by providing fast signal rise times with minimal signal distortion. insertion loss is typically less than ? 3 db within 10 mhz to 320 mhz passband and return loss is typically greater than ? 15 db (8 mhz to 240 mhz) with 75 w load (this can be effected by circuit board layout and other external electrical parasitics). with traditional coaxial links, the transformer also provides a balanced differential to single-ended connection between the transmitter/receiver ic and the coax. the dual package allows connections of both transmit and receive channels as shown in the application circuit below. the auto-insertable smd packaging allows for a cost-effective solution for the application. application circuit: united states (worldwide) 12220 world trade drive san diego, ca 92128 quick-facts: 619 674 9672 http://www.pulseeng.com tel: 858 674 8100 fax: 858 674 8262 united kingdom (northern europe) 1 & 2 huxley road the surrey research park guildford, surrey gu2 5re united kingdom tel: 44 1483 401700 fax: 44 1483 401701 france (southern europe) zone industrielle f-39270 orgelet france tel: 33 3 84 35 04 04 fax: 33 3 84 25 46 41 taiwan, r.o.c. (northern asia) 3f-4, no. 81, sec. 1 hsintai wu road hsi-chih, taipei hsien taiwan, r.o.c. tel: 886 2 2698 0228 fax: 886 2 2698 0948 singapore (southern asia) 150 kampong ampat #07-01/02 ka centre singapore 368324 tel: 65 287 8998 fax:65 280 0080 distributor 75 coax rx rtip rring ttipo tringo vcc r4 r5 c2 1:1 1/2 ST6200T 1/2 ST6200T r6 1:1 1:1 1/2 ST6200T r3 vcc 1/2 ST6200T c1 1:1 r1 r2 75 coax ttipo tringo rtip rring tx tx rx notes: 1. resistors r1, r2, r4, r5: 37.5 w , 2%, 1/4w 2. resistors r3 and r6: 75 w , 2%, 1/4w preliminary a105.p (10/99)
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