oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 1 oar25320 series part number oar25320 x ? yy - zz modification history rev. date originator comments, modifications draft0.1 feb.03.2003 t.ida features -high sensitivity -integrated apd high voltage bias and control circuits. -adjustable slice level -oil monitor and los alarm available. -high accuracy log converted by oil function. -selective data rate function (oc-3/oc-12/oc-48(w/, w/o fec) and gb-ether) application -sonet and itu-t compliant at oc3, oc12, gb-ether, oc48 and w/ fec for dwdm 1. specifications table 1.1 specifications ( vcc =+5.0v+/-5%,tc=-5 to 75c) parameter unit values o p eratin g wavelen g th nm 1200 to 1620 maximum operating bit rate gbps 2.666057 minimum sensitivit y dbm -28 ( note ) minimum overload dbm -7 jitter characteristics - itu-t g.958 conformit y los off si g nal activation be r ->1e-3 los off si g nal deactivation ber - >1e-5 loss of si g nal res p onse time usec activation<100 , deactivation<250 power consum p tion w < 3.0 o p eratin g case tem p erature ran g e c -5 to +75 o p eratin g humidit y %0 to 85 dimension mm 35. 6 x 59 x 8. 9 reliabilit y fit 1200 @ tc=45c note if not specified then me asurement conditions are nrz2 31 -1,mark ratio 1/2,ber 1x10 -12 ,1550nm document number qps-0202-101 revision 0.1 date: feb. 03, 2003 author t.ida project manager k. yusa
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 2 table 1.2 absolute maximum ratings parameter symbol condition min max unit supply voltage vcc +5v pin vcc -0.5 +6 v maximum signal output current (clock/data) io tc=+25c 0 30 ma maximum signal output current (los pin) i o - -25 +25 ma operating case te mperature range t op -20 +85 c storage temperature range t stg -40 +85 c lead soldering temperature/time - - 260/10 c/s tensile strength of fiber pigtail cable - tc=+25c - 500 g minimum bending radius of fiber pigtail cable - 30 mm table 1.3 electrical specifications ( vcc=+/-5%, tc=25c) parameter symbol min typ max unit power supply voltage (oar25320-lv) vcc +3.14 +3.30 +3.47 v power supply voltage (oar25320-nv) vcc +4.75 +5.00 +5.25 v power supply current i cc - 460 600 ma single end vout-single 200 - 800 mvp-p data/clock output amplitude differential vout-diff. 400 1600 output impedance r inroad - 50 - ohm on signal v on 0 - +0.8 v los signal output (los) loss of signal v los 2.4 - vcc v clock/data delay (fig1.1) - -75 +75 ps data/clock pulse width distortion - 80 100 120 % 75ps do(+) cko(+) 75ps 75ps 75ps figure 1.1 clock/data delay
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 3 voltage(v) optical input power(dbm) 2.85 0.85 -30 -10 input power [dbm] -10 -15 -20 -25 -30 voltage [v] 2.85 0.3 2.35 0.3 1.85 0.3 1.35 0.3 0.85 0.3 figure 1.2 optical input light voltage 2. block diagram figure 2.1 block diagram apd bias controller cdr pre amp. apd los in data p data n clock p clock n oilv dvt
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 4 3. package outline (unit : mm) figure 3.1 package outline
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 5 4. pin descriptions table 4.1 pin descriptions no. symbol functionality no. symbol functionality 01 sel0 data rate select (*2) 13 dtv decision threshold voltage (*1) 02 sel1 data rate se lect (*2) 14 gnd ground 03 los loss of signal 15 gnd ground 04 gnd ground 16 gnd ground 05 cko(-) false clock output 17 gnd ground 06 cko(+) true clock output 18 nic not internally connected 07 gnd ground 19 gnd ground 08 vcc positive power supply (*3) 20 gnd ground 09 gnd ground 21 nuc not internally connected 10 do(+) true data output 22 v cc positive power supply (*3) 11 do(-) false data output 23 oilv optical input light voltage 12 gnd ground 24 sel2 data select (*2) (*1) dtv should be connect ed to the resistor (2k ? ) that is terminated to gnd. (*2) data rate select function as follows : sel0 sel1 sel1 rate frequency 0 0 1 oc48 w/ fec 2.666gbps 0 0 0 oc48 2.48832 gbps 1 0 0 gigabit ethernet 1.25 gbps 0 1 0 oc12 622.08mbps 1 1 0 oc3 155.52mbps (*3) oar25320-nv : vcc=+5.0v, oar25320-lv vcc=3.3v
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 6 4. recommended interface circuit figure 5.1 recommended interface circuit 0.1uf 22uf vcc 15uh 08, 22 04, 07, 09, 12, 14, 15, 16, 17, 19, 20 oar25310 xx- yy- -zz pecl/ecl buffer 03 los ttl/cmos data p data n 50ohm 50ohm vcc-1.3v 11 10 clock p clock n 50ohm 50ohm vcc-1.3v 05 06 23 oilv 13 dtv 01,02 sel0/sel1 oar25320xx-yy-zz sel0/sel1 01 , 02
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 7 5. precautions for handling the circuits of these modules operate at very small si gnal. in order to avoid the degradation of the optical sensitivity due to external noise, the bottom pattern of these modules on the pcb should be ground pattern with low impedance. do not mount/pattern device/circuits which generate high frequency noise close to the module. in order to operate the module stable against the power noise, install the power supply noise reduction circuits. the impedance between the power and ground pattern of the power circuit should be as low as possible. the elements around the module should be mo unted close to the pins of the module. if an optical power exceeding the absolute maximum ratings is fed to the module, the optical receiver may be damaged. set the optical input power appropriately when in use of these modules. 6. qualification and reliability to help ensure high product reliability and customer sa tisfaction, oki is committed to an intensive quality program that starts in the design phase and proceeds through the manufacturing process. optical transceiver modules are qualified to oki internal standards using mil-std-883 test methods and procedures and using sample techniques consistent with telcordia requirements. this qualification program fully meets the intent of telcordia reliability practices gr-468-core.
oc48 optical receiver w/ cdr oar25320 series document number qps-0202-101 february 2003 oki electric industry 8 8. ordering information oar25320 - - pigtail fiber length 10 =1.0m 08 =0.8m 05 =0.5m optical connector type; l = lc connector m = mu plug connector s = sc connector f = fc connector operating power supply voltage; nv = +5.0v lv = +3.3v
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