oplink communications, in c. parameter symbol minimum maximum units storage temperature t st - 40 + 85 c operating case temperature h option t op 0 + 70 c i option - 40 + 85 operating & storage humidity - - 85 % supply voltage v cc 0 + 6.0 v maximum input optical power p in, max - - 5.0 dbm lead soldering temperature & time - - 260c, 10 sec absolute maximum ratings high sensitivity oc-12/stm-4 apd receivers srx12-apd the srx12-apd is a high sensitivity receiver module designed to ex- ceed the sonet/sdh optical interface requirements at oc-12/stm-4 (622mb/s) data rate. highly reliable ingaas/inp avalanche photodiode (apd) is used to cover the entire long wavelength range from 1100nm to 1600nm. the receivers feature a low noise gaas transimpedance ic with agc ca- pability to provide an extremely wide dynamic range and high sensitiv- ity. the apd bias voltage is temperature compensated to ensure stable operation over the entire operating temperature range. a signal detect function which indicates loss of optical input is provided. a differential optical power monitor output is also available. the srx12-apd receivers require only a single +5v supply. the data in- terface signals are differential pecl. the signal detect outputs can have either pecl or ttl interface. the srx12-apd receivers can operate over an operating case tempera- ture range of 0c to +70c (h option) or -40c to +85c (i option). the module is housed in a 24-pin dual-in-line metal package with a single mode fiber pigtail, which is terminated with st, fc or sc connector. related oc-12/stm-4 transmitters & receivers stx-12: 20-pin laser transmitter srx-12: 20-pin receiver without clock recovery (pecl signal detect) srx-12-l: 20-pin receiver without clock recovery (ttl signal detect) src-12-s: 24-pin receiver with clock recovery product description ? exceeds sonet/sdh oc-12/stm-4 long reach specifications ? optical power monitor outputs ? -40c to +85c operating temperature option ? 24-pin dip metal package ? st, fc or sc-connectorized fiber pigtail ? differential pecl data outputs ? differential pecl or ttl signal detect output option ? single +5v power supply features r3.2008.04.30
oplink communications, in c. interface circuit pin assignments (top view) sign al de tect + vp d output si gnal dete ct - note 1: this r es is to r is f or t he pec l option only . it s ho ul d be o mi tted f or t tl o pt io n. note 2: resistor values are in ?, capacitor values are in f. 1 h coil or fe rr ite inducto r srx +5 v 51 0 (n ot e 1) 510 (n ot e 1) 01 01 17 9 8 13 0 3 1,24 4, 11 ,12,13 14,15,1 9 10.0 10.0 7,18 ,2 0 82 82 16 da ta + da ta - 13 0 all case pins should be grounded 1 2 3 4 5 6 7 8 9 10 1 1 12 24 23 22 21 20 19 18 17 16 15 14 13 n/c: no internal connection case n/c v pd out gnd v pm+ v pm- v cc da t a + da t a - n/c gnd gnd case n/c n/c n/c v cc v cc signal detect - signal detect + gnd gnd gnd gnd receiver performance characteristics (over operating case temperature, v cc = 4.75 to 5.25v) srx12-apd parameter symbol minimum typical maximum units operating data rate 1 b - 622 - mb/s receiver sensitivity (10 -10 ber) 2 temperature option i p min - 37.0 - 40.5 - dbm temperature option h - 38.0 - 40.5 - maximum input optical power (10 -10 ber) 2 p max - 8.0 - 3.0 - dbm signal detect thresholds increasing light input p sd+ - - - 38.0 dbm decreasing light input p sd- - 55.0 - - signal detect hysteresis - - 0.5 - db wavelength of operation 1100 - 1600 nm optical power monitor diferential voltage (at 25c) v pm - 10 - mv/w 1 data rate ranges from 50mb/s to 700mb/s. however, some degradation may be incurred in overall performance. 2 specified in average optical input power and measured at 1310nm wavelength with 2 23 -1 prbs at 622mb/s. receiver electrical interface (over operating case temperature, v cc = 4.75 to 5.25v) parameter symbol minimum typical maximum units supply voltage v cc 4.75 5.0 5.25 v supply current i cc - 120 180 ma data output high voltage 1 v oh v cc - 1.150 - v cc - 0.880 v data output low voltage 1 v ol v cc - 1.830 - v cc - 1.555 v signal detect high voltage (pecl option) 1 v oh v cc - 1.150 - v cc - 0.880 v signal detect low voltage (pecl option) 1 v ol v cc - 1.830 - v cc - 1.555 v signal detect high voltage (ttl option) v oh 2.7 - v cc v signal detect low voltage (ttl option) v ol 0 - 0.5 v v pd output voltage (maximum current 3ma) v pd - 90 - 60 - 20 v 1 with termination of 50 to v cc - 2v. 2 r3.2008.04.30 all parameters guaranteed only at typical data rate
46335 landing parkway fremont, ca 94538-6407 tel: (510) 933-7200 fax: (510) 933-7300 email: sales@oplink.com oplink communications, inc. reserves the right to make changes in equipment design or specifcations without notice. information supplied by oplink commu- nications, inc. is believed to be accurate and reliable. however, no responsibility is assumed by oplink communications, 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 oplink communications, inc. ? 2008, oplink communications, inc. application notes the receiver converts the incident optical power to a photocurrent via a high performance avalanche photodiode (apd). the photocurrent can be monitored via the differential voltage across the two vpm+ and vpm- output pins. it is important to note that the common mode voltage (i.e. dc voltages at pm+ and vpm-) is high (-60v typical). the apd bias voltage is temperature compensated to ensure stable operation over the entire operating temperature range. the apd bias voltage is also available as an output via the vpd output. the maximum current that this output can source is 1ma. the signal detect circuit monitors the level of the incoming optical signal and generates a logic low signal when an insufficient photocurrent is produced. both differential data+ and data outputs (also signal detect+ and signal detect- if the pecl option is chosen) are open emitter pecl levels requiring termination (50 to v cc - 2v or 510 to grd is recommended). both differential outputs should be terminated in the same manner, even if only one is used. if the ttl option is chosen for the signal detect outputs, no termination resistor should be used. the power supply line should be wellfiltered. the power supply should be bypassed by 0.01 or 0.1f ceramic chip placed as close to the receiver module as possible. related transmitter & receiver modules stx-12 : oc-12/stm-4 transmitter (multi-sourced 20-pin dip) srx-12 : oc-12/stm-4 receiver without clock recovery, ecl signal detect (multi-sourced 20-pin dip) srx-12-l : oc-12/stm-4 receiver without clock recovery, ttl signal detect (multi-sourced 20-pin dip) src-12 : oc-12/stm-4 receiver with clock recovery (multi-sourced 20-pin dip) src-12-s : oc-12/stm-4 receiver with clock recovery (24-pin dip, compatible with sumitomo sdt8712-rd) srx the pigtail length from the package edge is 1.0 meter typical. ordering information srx12-apd r3. 2008.04.30 3 ap d vp m- vp m+ vpd ou t apd bias 220? 10k? 10k? suppl y package outline dimensions in inches [mm] default tolerances: .xxx = .005, .xx = .01 type rx only 5v= 8 temperature range receivers wavelength range rx 1100-1600nm apd -40 ~85?c= i 0~70?c= h 000 2 x r 2 8 1 connector type & option pigtail fc, sd-ttl= pa pigtail st, sd-ttl= pb pigtail sc, sd-ttl= p5 pigtail fc, sd-pecl= pc pigtail st, sd-pecl= pd pigtail sc, sd-pecl= p4
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