1 21737-0342, rev. b 1-28-02 features ; eight wavelengths (8) cwdm transceivers ; compliant with ieee 802.3z gigabit ethernet 1000base-lx pmd specifications ; eye safe (class i laser safety) ; excellent emi & esd protection (optional extra emi shield also available) ; multi-sourced 10-pin (2x5) sff (small form factor) package style ; duplex lc optical connector interface ; single +3.3 v supply & lv-pecl data interface (ac coupling option also available) ; lv-ttl tx disable input & rx signal detect output the DTR-1250-SM-LC-cwdm and dtr-1250-sm-ls- cwdm fiber optic transceivers offer a simple and convenient way to interface 1000base-lx gigabit ethernet boards running at 1.25 gbaud to single mode fiber optic cables in coarse wavelength division multiplexing (cwdm) applications. there are eight center wavelengths available 1470 nm, 1490 nm, 1510 nm, 1530 nm, 1550 nm, 1570 nm, 1590 nm, and 1610 nm. two performance options are available. in option ?h5?, a guaranteed minimum optical link budget of 17 db is offered which can correspond to a link distance of over 35 km or 40 km (assuming worst case fiber loss of 0.3 and 0.25 db/km respectively). in option ?h7?, a guaranteed minimum optical link budget of 20 db is offered which can correspond to a link distance of over 70 km (assuming fiber loss of 0.2 to 0.25 db/km). the transmit and receive functions are contained in a narrow width two-row, 10-pin (2x5) package with a duplex lc connector interface. the receptacle fits into an rj-45 form factor outline. the 10-pin configuration is in conformance to a small form factor (sff) multisource agreement. all modules satisfy class i laser safety requirements in accordance with the us fda/cdrh and international iec-825 standards. the transmitter and receiver data interface are differential direct-coupled lv-pecl. an alternate version with ac coupling interface is also available. an lv-ttl transmitter disable control input is provided. the receiver signal detect output interface is also lv-ttl. the transceiver operates from a single +3.3v power supply over an operating temperature range of 0c to +70c. the module is housed in a metal package for excellent emi shielding. description optical communication products, inc. absolute maximum ratings DTR-1250-SM-LC/ls-cwdm 3.3v lc connector sff gigabit ethernet cwdm laser transceivers ocp ? parameter symbol minimum maximum units storage temperature t st - 40 + 85 c operating temperature t op 0+ 70c supply voltage v cc 0+ 5.0v input volta ge v in 0 v cc v output current i o -50ma lead soldering temperature & time - -260c, 10 sec
2 21737-0342, rev. b 1-28-02 transmitter electrical interface (over operating case temperature range) receiver electrical interface (over operating case temperature range) electrical power supply characteristics (over operating case temperature range) data interface (dc-coupled modules) : the interface circuit for standard dc-coupled modules with direct-coupled lv-pecl interface is shown in fig. 1. the transmitter input has internal 50 ohm termination. data interface (ac-coupled modules) : for modules with ac coupling option, both transmitter and receiver interface has internal bias, termination and ac coupling capacitor. the transmitter can be connected directly to the driving serdes as shown in fig. 2. the receiver can be connected directly to the external 50 ohm loads (termination resistor of the serdes). for best performance, both data+ & data- should be used. tx disable : the transmitter is normally enabled (i.e. when the tx disable control input is not connected or at lv-ttl logic low). when the tx disable voltage is higher than v cc - 1.3 v, the laser is turned off independent of the input data. signal detect: the signal detect circuit monitors the level of the incoming optical signal and generates a logic low signal when insufficient photocurrent is produced. its output is lv-ttl with no termination required.(option for lvpecl is also avalible.) application notes DTR-1250-SM-LC/ls-cwdm fig.1 dc-coupled modules fig.2 ac-coupled modules parameter symbol minimum typical maximum units input high voltage 1 v ih v cc - 1.165 - v cc - 0.700 v input low voltage 1 v il v cc - 1.950 - v cc - 1.475 v transmitter disable voltage v dis v cc - 1.3 - v cc v transmitter enable voltage v en 0-0.8v 1 for ac-coupled modules, the input voltage swing is 0.25 v minimum and 1.2 v maximum single-ended. parameter symbol minimum typical maximum units output high voltage (lv-pecl) 1,2 v oh v cc - 1.10 - v cc - 0.90 v output low voltage (lv-pecl) 1,2 v ol v cc - 1.84 - v cc - 1.60 v output current i o --25ma output high voltage (lv-ttl) v oh 2.4 - v cc output low voltage (lv-ttl) v ol 0-0.8 1 with 50 ohm terminated to v cc - 2 volt (for dc-coupled modules). 2 for ac-coupled modules, the output voltage swing into 50-ohm load is 0.3 v minimum and 1 v maximum single-ended. parameter symbol minimum typical maximum units supply voltage v cc 3.13 3.3 3.47 v supply current 1 dc-coupled module i cc -160230ma ac-coupled module i cc -185255ma 1 supply current does not include termination. 1 7 5 4 10 9 6 2 3 + + +3.3 volt 1 h coil or ferrite inductor 1 h coil or ferrite inductor txd+ txd - signal detect tx disable rxd - rxd+ gnd posts 0.1 0.1 10 10 0.1 160 160 100 capacitor values in f, resistor values in ohm 8 50 ohm line serdes 50 ohm line depending on serdes depending on serdes 100 50 ohm line 50 ohm line 1 7 5 4 10 9 6 2 3 + + +3.3 volt 1 h coil or ferrite inductor 1 h coil or ferrite inductor txd+ txd - signal detect tx disable rxd - rxd+ gnd posts 0.1 0.1 10 10 0.1 160 160 160 100 capacitor values in f, resistor values in ohm 8 50 ohm line lv-pecl 50 ohm line 100 50 ohm line 50 ohm line lv-pecl 160
3 21737-0342, rev. b 1-28-02 transmitter performance characteristics (over operating case temperature, v cc = 3.13 to 3.47 v) receiver performance characteristics (over operating casetemperature, v cc = 3.13 to 3.47 v) DTR-1250-SM-LC/ls-cwdm optical communication products, inc. date of manufacture: manufactured in the usa this product complies with 21 cfr 1040.10 and 1040.11 meets class i laser safety requirements laser safety : all transmitters are class i laser products per fda/cdrh and iec-825 standards. they must be operated under specified operating conditions. parameter symbol minimum typical maximum units data rate b 50 1250 1300 mb/s optical output power 1 h5 p o - 4.0 - 2.0 1.0 dbm h7 -3.0 - 1.0 2.0 center wavelength 1470 c 1464 1470 1477.5 nm 1490 1484 1490 1497.5 1510 1504 1510 1517.5 1530 1524 1530 1537.5 1550 1544 1550 1557.5 1570 1564 1570 1577.5 1590 1584 1590 1597.5 1610 1604 1610 1617.5 spectral width (-20 db) h5, h7 ? 20 --1.0nm extinction ratio p hi / p lo 9- -db deterministic jitter dj - - 80 ps random jitter rj - - 147 ps relative intensity noise rin - - - 120 db/hz transmitter output eye compliant with eye mask defined in ieee 802.3z standard 1 measured average power coupled into single mode fiber (smf). parameter symbol minimum typical maximum units data rate b 125 1250 1300 mb/s minimum input optical power (10 -12 ber) 1 h5 p min - 21.0 - - dbm h7 - 23.0 - - maximum input optical power (10 -12 ber) 1 p max - 3.0 - - dbm signal detect thresholds increasing light input h5 p sd+ - - - 21.0 dbm h7 - - - 23.0 dbm decreasing light input p sd- - 30.0 - - dbm signal detect hysteresis - 0.5 - - db deterministic jitter dj - - 170 ps random jitter rj - - 96 ps wavelength of operation 1100 - 1620 nm optical return loss - 12 - - db electrical 3 db upper cutoff frequency - - - 1500 mhz stressed receiver sensitivity compliant with ieee 802.3z standard 1 measured with 2 7 -1 prbs at 1250 mb/s. power supply and grounding : the power supply line should be well-filtered. all 0.1 f power supply bypass capacitors should be as close to the dtr transceiver module as possible. the two front gnd posts (mounting studs) should be grounded to chassis ground for best emi and esd protection. if chassis ground is not available, they should be tied to circuit ground.
4 21737-0342, rev. b 1-28-02 DTR-1250-SM-LC/ls-cwdm package without emi shield (lc) dimension in inches [mm] package with emi shield (ls) pin assignments pin function 1rx gnd 2v cc rx 3 sd (rx signal detect) 4 rd- (rx data out -) 5 rd+ (rx data out +) 6v cc tx 7tx gnd 8 tx disable 9 td+ (tx data in +) 10 td- (tx data in -) *x, *y: see pin length option table in ordering information *x, *y: see pin length option table in ordering information dimension in inches [mm] 18.54 .730 9.78max .385max 9.65 .380 11 .43 0.38 .015 4.1 .16 48.44 1.907 10.54 .415 13.56 .534 0.76 .030 1.91 .075 2.54 .100 1.02 .040 10.16 .400 0.46 13.41 .528 14.8 .58 17.78 .700 1.78 .070 6.25 .246 2x 2x *x *y 1 10 10 1
5 21737-0342, rev. b 1-28-02 optical communication products, inc. reserves the right to make changes in equipment design or specifications without notice. i nformation supplied by optical communication products, inc. is believed to be accurate and reliable. however, no responsibility is assumed by optical communication products , inc. for its use nor for any infringements of third parties which may result from its use. no license is granted by implication or otherwise under any patent right of optica l communication products, inc. optical communication products, inc. 20961 knapp street, chatsworth, ca 91311, tel.: 818-701-0164, fax: 818-701-1468, http://www.ocp-inc.com ordering information dtr-1250-sm- ww - xn - czzz - yy -m p center wavelength c470: 1470 nm c490: 1490 nm c510: 1510 nm c530: 1530 nm c550: 1550 nm c570: 1570 nm c590: 1590 nm c610: 1610 nm package types lc: package without shield ls: package with shield light output power h5: -2dbm (typ.) h7: -1dbm (typ.) coupling option ? blank ?: dc coupling ac : ac coupling DTR-1250-SM-LC/ls-cwdm see pin length option table pin length option table options ( p ) pin length (x) post length (y) inches millimeters inches millimeters m 0.140 + 0.010 3.56 + 0.250 0.125 + 0.010 - 0.005 3.17 + 0.250 - 0.125 m5 0.155 + 0.010 3.94 + 0.250 0.155 + 0.010 - 0.005 3.94 + 0.250 - 0.125 m8 0.180 + 0.010 4.57 + 0.250 0.180 + 0.010 4.57 + 0.250
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