an oplink company parameter symbol minimum maximum units storage temperature t st - 40 + 85 c operating case temperature i option (sr & ir only) t op - 40 + 85 c h option 0 + 70 maximum optical input power (lr only) p in, max - - 5.0 dbm supply voltage v cc 0 + 6.0 v input voltage v in 0 v cc v lead soldering temperature & time - - 260c, 10 sec absolute maximum ratings oc-48/stm-16 receiver without clock recovery srx48 seris the srx48 modules are receivers designed to meet or exceed the so - net/sdh optical interface requirements at oc-48/stm-16 (2.488 gb/s) data rate. three performance versions are available which are fully com - pliant with short reach, intermediate reach and long reach specifca - tions at 1300 nm or 1550 nm wavelength. the receiver for the short reach and intermediate reach version uses pin photodiodes. for the long reach version, ingaas avalanche pho - todiodes (apds) are used to achieve high sensitivity. the long reach receiver features a low noise gaas transimpedance ic with agc capa - bility to provide an extremely wide dynamic range. the data outputs are diferential signals designed to be ac-coupled into 50 ohm load. a ttl signal detect function which indicates loss of optical input and an analog received optical power monitor output are also provided. all receiver modules can be operated with a single +5v supply. the op - erating temperature range is -40c to +85c for the short reach and in - termediate reach version and 0c to +70c for the long reach version. all receivers are housed in a 24-pin dual-in-line metal package with a fber pigtail (single mode fber for long reach version and 50/125 m multimode fber for short reach and intermediate reach versions), which is terminated with mu, lc, st, fc or sc connector. product description ? fully compliant with sonet/sdh oc-48 (2.5 gb/s) specifcations ? long reach 1310 nm & 1550 nm as well as intermediate reach and short reach ? internal temperature-compensated high voltage apd supply (long reach version) ? -40c to +85c operating temperature (intermediate reach and short reach) ? 24-pin dip metal package ? mu, lc, fc, st, sc-connectorized fber pigtails ? diferential data interface ? received optical power monitor function ? ttl signal detect output ? single +5 v supply features r5.2008.04.30
oplink communications, in c. receiver performance characteristics srx48 (over operating case temperature.) parameter symbol minimum typical maximum units data rate b 0.1 2.488 3.0 gb/s receiver sensitivity (10 -10 ber) 1 short & intermediate reach p min - 20.0 - 24.0 - dbm long reach - 28.0 - 32.0 - maximum input optical power (10 -10 ber) 1 short reach (sr) p max - 3.0 - 1.0 - dbm intermediate reach (ir) 0 2.0 - long reach (lr) - 8.0 - - 6.0 signal detect thresholds sr & ir increasing light input p sd+ - - - 20.0 dbm decreasing light input p sd- - 35.0 - - lr increasing light input p sd+ - - - 28.0 dbm decreasing light input p sd- - 42.0 - - signal detect hysteresis - 0.5 1.0 - db optical power monitor lr (p in from -28 dbm to -17 dbm) v pm - 6.4 - mv/w ir & sr (p in from -20 dbm to 0 dbm) i pm - 0.8 - a/w wavelength of operation 1100 - 1600 nm 1 specified in average optical input power and measured at 2.48832 gb/s and 1300 nm or 1550 nm wavelength with 2 23 -1 prbs. receiver electrical interface parameter symbol minimum typical maximum units supply voltage v cca v ccd 4.75 5.0 5.25 v supply current sr & ir i - 195 250 ma lr - 225 275 output voltage swing (data) v pp 0.4 0.5 1.0 v output high voltage (signal detect) v oh 2.7 - v cc v output low voltage (signal detect) v ol 0 - 0.7 v 2 r5.2008.04.30 related oc-48/stm-16 transceiver & receiver modules stx-48 : transmitter module (24-pin dip) src-48 : receiver module with clock recovery (24-pin dip) dtr-2488-sm : transceiver without clock recovery (industry standard 1x9 package) dtr-2488-sm2 : transceiver without clock recovery (industry standard 2x9 package) dtc-48 : transceiver with clock recovery (industry standard 2x9 package)
oplink communications, in c. application notes short & intermediate reach long reach pd ex ternal monitor resist or (3 k ohm recommend ed ) pd current moni to r pm + v cc ap d 1 k 10 k 10 k a pd bi as su pp ly pm + pm - 84-xrs 84-xrs 50 oh m li ne 50 ohm lin e srx-48 9 4,5, 6,7, 11 ,1 2,13 14,15, 16 ,19,21 8 da ta + 10 1 h coil or ferrite bead (< 0. 2 oh m seri es resistance) da ta - si gnal de te ct 17 ,1 8 20 3 + 10 0. 01 fo r sr & ir on ly +5v pm- to 50 oh m lo ad to 50 oh m lo a d + 10 0.01 0.01 +5v + 10 0 + 10 22 fo r lr on ly the ac coupling capacitor is typically 0.022 f for 2.48 gb/s. if operation at lower data rates is required, a parrallel combination of 0.022 f & 0.22 f (or larger) is recommended interface circuit srx48 r5.2008.04.30 3 the receiver converts the incident optical power to a photocurrent via a high performance p-i-n photodiode (short and intermediate reach version) or an avalanche photodiode (long reach version). for the short and intermediate reach version, the photocurrent can be monitored via the voltage drop across an external resistor connected between pm+ and v cc . for the long reach version, the photocurrent can be monitored via the diferential voltage across the two pm+ and pm- output pins. it is important to note that the common mode voltage of these two monitor outputs (i.e. dc voltages at pm+ and pm-) is high (- 60 v typical). the apd bias voltage is temperature compensated to ensure stable operation over the entire operating temperature range. the data outputs are differential signals designed to be ac-coupled into 50 ohm load. transmission lines are recommended for best performance. the signal detect circuit monitors the level of the incoming optical signal and generates a ttl logic low signal at the signal detect output when insufcient photocurrent is produced. no termination resistor is required for the signal detect output.
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. pin function pin function 1 n/c (no connection) 24 n/c (no connection) 2 n/c (no connection) 23 n/c (no connection) 3 sd (signal detect) 22 pm- (for lr), n/c (for sr & ir) 4 gnd 21 gnd 5 gnd 20 pm+ 6 gnd 19 gnd 7 gnd 18 v cca (v cc analog) 8 data output - 17 v cca (v cc analog) 9 data output + 16 gnd 10 v ccd (v cc dc-dc converter) 15 gnd 11 gnd 14 gnd 12 gnd (dc-dc converter) 13 gnd 46335 landing pkwy fremont, ca 94538 tel: (510) 933-7200 fax: (510) 933-7300 email: sales@oplink.com ? www.oplink.com srx ordering information package outline srx48 r5. 2008.04.30 4 (dimension in inches) pinout assignments the pigtail length from the package edge is 1.0 meter typical. supply voltage 5v= 8 temperature range receivers wavelength 1100~1600nm pin= r1 1100~1600nm apd= r2 option pigtail fc= p1 pigtail st= p2 pigtail sc= p3 pigtail mu= p6 pigtail lc= p9 -40 ~85?c= i 0~70?c= h 0 0 0 8 x 8 4
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