ITR-D3T-SD6-A ds-5863 rev 01 - digital transmitter: a dfb laser diode is employed for upstrea m transmission at oc-24 (1244mbps). the optical transmitter includes a back facet photodetector to monitor laser power for apc control. - digital receiver: an apd with tia is employed for downstream data reception at oc-48 (2488mbps). a post amplifier is also included for cml output compatibility. - analog receiver: 1ghz forward path video (catv) receiver with multiple gai n stages, automatic gain control (agc) and status indicators. optical triplexer module 1550nm pin receiver 1310nm laser wdm tia 1490nm apd receiver rx section lim. amp. tx section ldd 1310nm upstream 1490nm downstream 1555nm downstream rx data tx data triplexer block diagram agc moca rf tilt / surge protection rf detector video section d/a microcontroller a/d rf out 1310/1490/1555nm integrated triplexer transceiver features ? single fiber, integrated triplexer transceiver ? compliant to fsan g.984.2 specifications ? voice/data/video fttx ont/onu applications ? 1310nm tx, 1490nm rx, 1555nm video rx ? 1244mbps tx / 2488mbps rx asymmetric data rate ? burst mode upstream transmission ? 16.5dbmv minimum rf output power ? 1ghz video bandwidth, with feedback agc operation, without moca filter ? -40 to 85oc operation ? 20km reach ? 28db power budget ? rohs-5/6 compliant (lead exemption) ? gr-326-core compliant sc/apc connector ? meets ul 94v-1 flammability
ITR-D3T-SD6-A ds-5863 rev 01 absolute maximum ratings usage of this transceiver shall adhere to the following absolute ma ximum ratings. stresses beyond those in table 1 may cause pe rmanent damage to the unit. these are stress ratings only, and functional operation of the unit at these or any other conditions beyond those ind icated in the operational sections of the specifications is not im plied. exposure to absolute maximum rating conditions for extended periods may affect u nit reliability. table 1 - absolute maximum ratings parameter minimum maximum unit/conditions ambient storage temperature -40 85 oc esd sensitivity (human body model) - 1000 v lead soldering temperature - 260oc 10 sec vdd_+12v -0.3 15 v vcc_rx -0.3 +4.2 v vcc_tx -0.3 +4.2 v; vcc_tx < (vcc_rx + 1v) vcc_3.3v -0.3 +4.2 v lightning surge -1500 +1500 v recommended operating conditions the following table identifies the recommended oper ating condition for optic al transceiver use. table 2 ? recommended operating conditions parameter minimum typical maximum unit/conditions operating temperature a -40 - 85 oc operating humidity range 10% - 90% non-condensing total 3.3v supply current - - 350 ma total 12v supply current - - 225 ma power supply ripple - - 100 mvp-p, 100hz to 1mhz a minimum is ambient temperature; ma ximum is module case temperature.
ITR-D3T-SD6-A ds-5863 rev 01 optical characteristics the following table summarizes the performance specifications for the integrated optical block located within the transceiver m odule. table 3 - optical characteristics parameter minimum typical maximum unit/conditions 1555nm external to 1490 nm rx isolation 32 - - db 1490nm external to 1555nm rx isolation 32 - - db 1310nm external to 1555nm video isolation 40 - - db 1310nm external to 1490nm data isolation 30 - - db 1310nm tx to 1490nm rx optical crosstalk - - -47 db 1310nm tx to 1555nm rx optical crosstalk - - -47 db back reflection @ 1310nm - - -6 db back reflection @ 1555nm - - -32 db back reflection @ 1490nm - - -20 db functional characteristics the following tables list the performance specifications for t he various functional blocks of the integrated optical transceive r module. table 4 ? digital transmitter specifications parameter minimum typical maximum unit notes operating voltage 3.14 3.30 3.46 v vcc referenced to gnd_tx data rate - 1244.16 - mbps average optical output power, p o 0.5 - 5 dbm output power at transmit off - - -40 dbm extinction ratio 10 - - db prbs 223-1, nrz, 50% duty cycle transmitter output eye g.984.2 figure 3 optical rise and fall time - 250 - ps 20% to 80% side mode suppression ratio (smsr) see below center wavelength, o 1290 - 1330 nm dual dfb modes allowed; rms spectral line width <1.5nm; smsr >30db for fp modes differential input voltage, v in 300 - 1800 mvp-p ben+/- and txd+/-. dc-coupled input impedance, differential - 100 - ? ben+/-, txd+/- common-mode input voltage gnd_tx + 1.4 - vcc - (v in /2) - 0.1 v dc coupled tx burst enable time - - 12.86 ns 16 bits data @ 1244mbps tx burst disable time - - 12.86 ns 16 bits data @ 1244mbps
ITR-D3T-SD6-A ds-5863 rev 01 refer to figure 1 which schematically descri bes the high speed data inputs/outputs of the optical transceiver module. figure 1 - schematic representation of the module high speed inputs/outputs table 5 ? digital receiver specifications parameter minimum typical maximum unit notes operating voltage 3.14 3.30 3.46 v v cc referenced to gnd_rx data rate - 2488.32 - mbps operational wavelength range 1480 - 1500 nm received optical power -28 - -8 dbm prbs 2 23 -1, 50% duty cycle bit error rate (ber) - 10 -10 cid 72 bits data output rise and fall time - 160 - ps 20% to 80% signal detect assertion level - -28 dbm transition during increasing light signal detect de-assertion level a -38 - - dbm transition during decreasing light signal detect hysteresis 0.5 - - db differential output voltage 600 - 900 mv cml output, ac coupled (0.1 f) signal detect output high voltage 2.4 - - v lvttl with internal pull up resistor. asserts high when input data amplitude is above threshold. signal detect output low voltage - - 0.5 v lvttl. de-asserts low when input data amplitude is below threshold. rssi range b -28 - -8 dbm rssi accuracy -3 - +3 db a rx outputs are squelched upon signal detect de-assert ldd / post amp . tx tx data & burst enable rx data 100 ? ? ?
ITR-D3T-SD6-A ds-5863 rev 01 b externally calibrated. table 6 ? video receiver specifications parameter minimum typical maximum unit notes 12v operating voltage range 11.7 - 13.2 v frequency range 54 - 1000 mhz receiver wavelength (bandwidth) 1550 1555 1560 nm responsivity 0.8 - - a/w video pd monitor accuracy - - 10 % agc time constant 1 5 15 s s22 output return loss 14 20 db 75 ? table 7 - supported video channel plans parameter minimum typical maximum unit notes channel plan analog channels a 82 - - omi = 3.4% / channel digital channels 34 - - omi = 1.7% / channel channel bandwidth 4 - mhz channel spacing - 6 - mhz received average optical power -6 1 dbm rf channel output power 55mhz 16.5 - - dbmv linear lower bound from 55-1000mhz rf channel output power 1000mhz 19.5 - - dbmv distortion cso ctb - - -65 -62 -55 -55 dbc for digital channels, cso max. and ctb max. will be 7db higher carrier to noise ratio (cnr) 45 - - db a total omi = 32%
ITR-D3T-SD6-A ds-5863 rev 01 table 8 - microcontroller specifications parameter minimum typical maximum unit notes operating voltage 3.14 3.30 3.46 v sda a - - - - lvttl, open collector serial data line from the i 2 c bus to the on board microcontroller. scl b - - - - lvttl, open collector serial clock line from the i 2 c bus to the on board microcontroller. reset hold c 30 - - ms lvttl input, internal 50k ? pull-up. active low interrupt - - - - lvttl output, internal 100k ? pull-up. active low a i 2 c sda and scl must be open collector or open drain connections. b clock stretching, as per paragraph 13.2 of the i 2 c bus standard, must be implemented to operate correctly. c please see table 9 and the timing di agram in figure 2 below for the recommended system start-up sequence. table 9 ? suggested start-up sequence step action 1 power up the host system, with the reset pin pulled to ground via a 4.7k ? resistor. 2 drive the reset pin low. 3 set the ben control lines to disabl e the transmitter (ben lines must be driven with differential logic). 4 ensure power to the unit is on. 5 drive the reset pin high to release the unit to become operational. 6 wait approximately 250ms until the interrupt pin goes low. 7 read bytes a2.70/71/74/75 to clear the interrupt condition. verify that byte a2.75 bit 7 was set. use multi-byte read of bytes 70/71 and bytes 74/75. 8 wait 50ms. verify that the interrupt pin has changed to high. 9 the unit is now ready for normal operation. figure 2 - recommended transceiver module start-up sequence
ITR-D3T-SD6-A ds-5863 rev 01 pin definitions refer to table 10 for a description of the function of each i/o pin. table 10 - module pin definitions pin number label definition 1 gnd_a common ground 2 gnd_rx digital rx ground 3 vcc_rx digital rx vcc 4 sd signal detect output. lvttl with internal 3.3k ? ? terminated to vcc and ac coupled to module output (0.1 f). 6 rxd- rx data bar output, cml. 50 ? terminated to vcc and ac coupled to module output (0.1 f). 7 ben+ burst enable input, cml. internally dc coupled. 100 ? differential termination. 8 ben- burst enable bar input, cml. internally dc coupled. 100 ? differential termination. 9 gnd_tx digital tx ground 10 txd+ tx data input, cml. internally dc coupled. 100 ? differential termination. 11 gnd_tx digital tx ground 12 txd- tx data bar input, cml. internally dc coupled. 100 ? differential termination. 13 vcc_tx digital tx vcc 14 sda i2c data input/output. lvttl 15 scl i2c clock input. lvttl 16 int interrupt output. lvttl with internal 100k ? pull-up. active low. 17 vdd_+12v video rx 12v vdd 18 vcc_3.3v microcontroller vcc 19 reset reset input. lvttl. internal pull up. active low. 20 gnd_a common ground 21 rf_gnd rf ground 22 rf_signal rf signal 23 rf_gnd rf ground
ITR-D3T-SD6-A ds-5863 rev 01 package diagram notes 1. dimensions in inches [mm] 2. minimum fiber bend radius = 1.18 [30.00] 23.5 1.5 [597 38]
ITR-D3T-SD6-A ds-5863 rev 01 ordering information table 11 - ordering information part no. application data rate laser source temp. range ITR-D3T-SD6-A gpon ont 1244.16mb/s / 2488.32mb/s 1310nm dfb -40 to 85c table 12 - device handling/esd protection the devices are static sensitive and may easily be damaged if ca re is not taken during handling. the following handling practic es are recommended. 1 devices should be handled on benches with conductive and grounding surfaces. 2 all personnel, test equipment and tools shall be grounded. 3 do not handle the devic es by their leads. 4 store devices in protective foam or carriers. 5 avoid the use of non-conductive pl astics, rubber, or silk in the area where the devices are handled 6 all modules shall be packaged in materials that are anti-st atic to protect against adver se electrical environments. 7 avoid applications of any voltage higher than maximum rated voltages to this part. for proper operation, any vin or vout shoul d be constrained to the range gnd (vin or vout) vcc. unused inputs must always be tied to an appropriate logic voltage (e.g. either gnd or vcc). unused outputs must be left open.
ITR-D3T-SD6-A ds-5863 rev 01 warnings handling precautions: this device is susceptible to damage as a result of electr ostatic discharge (esd). a static free environm ent is highly recommended. follow guidelines according to proper esd procedures. laser safety: radiation emitted by laser dev ices can be dangerous to human eyes. avoid ey e exposure to direct or indirect radia tion. legal notice important notice! all information contained in this document is subject to change without notice, at source photonics? sole and absolute discretion. source photonics warrants performance of its products to curr ent specifications only in accordance wi th the company?s standard one-year warranty ; however, specifications designated as ?preliminary? are given to describe components only, and source photonics expressly disclaims any and all warrant ies for said products, including express, implied, and statutory warranties, warrantie s of merchantability, fitness for a particular purpose, and non- infringement of proprietary rights. please refer to the company?s terms and condi tions of sale for further warranty information. source photonics assumes no liability for applications assistance, customer product design, software performance, or infringeme nt of patents, services, or intellectual property described herein. no license, either express or implied, is granted under any patent right, copyright, or intellectual property right, and source photonics makes no representations or warranties that the product(s) described herein are free from patent, copyrigh t, or intellectual property rights. products described in this document are not intended for use in implantation or other life support applications where m alfunction may result in injury or death to persons. source photoni cs customers using or selling products for us e in such applications do so at their ow n risk and agree to fully defend and indemnify source photonics for any damages resulting from such use or sale. ? copyright source photonics, inc. 2007~2008 all rights reserved. all information contained in this document is subject to change without notice. the products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. the information contained in this document does not affect or change source photonics product specifications or warranties. not hing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of source phot onics or third parties. all information contained in this document was obtai ned in specific environments, and is presented as an illustr ation. the results obtained in other operating environments may vary. the information contained in this document is provided on an ?as is? basis. in no event will source photonics be liable for damages arising directly from any use of the information contained in this document. contact s ource p hotonics 20550 n ordhoff s t . c hatsworth , ca 91311 sales@sourcephotonics.com tel: 818-773-9044 fax: 818-576-9486 or visit our website: http://www.sourcephotonics.com
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