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02067-DSH-001-G mindspeed technologies ? july 2011 mindspeed proprietary and confidential the m02067 is a highly integrated, programmable laser driver intended for datacom applications up to 2.1 gbps. using differential pecl data inputs, the m02067 supplies the bias and modulation current for driving an edge- emitting laser. the modulation output can be dc-coupled to the laser diode, giving a significant power saving over ac-coupled operation. the m02067 includes automatic power control to maintain a constant average laser output power over temperature and life. in addition, the modulation current is temperature compensated to minimize variation in extinction ratio over temperature. output flags indicate laser end of life as well as failure of the apc circuitry to maintain average output power. features ? rise and fall times <150 ps ? dc or ac-coupled modulation drive ? independently program mable laser bias and modulation currents ? bias current to 100 ma and m odulation current to 85 ma at v cc = 3.3v ? automatic laser power control, with programmable temperature compensation and ?slow-start? ? bias and modulation current monitors ? operates with +3.3v supply applications ? gigabit ethernet ? fibre channel ? 2 x fibre channel ?gbic functional block diagram x100 x60 failure detect dis ena 55 55 fail x1 oca data bias mon mod mon i bias i mod out- out+ v cc i bias r modset r tcslope r tcstart r mpcset v cc c mpc v ref pd r oca oca set rd gnda r shunt c shunt v cc m02067 3.3 volt laser driver ic for g be and fibre channel to 2.1 gbps
02067-DSH-001-G mindspeed technologies ? ii mindspeed proprietary and confidential ordering information part number package m02067g-12 qfn package (-12 marking) m02067g-13 qfn package (-12 ? marking) m02067-tevm to-can optic al evaluation board m02067-e-evm electrical evaluation board current part number ordering informat ion for this part on mindspeed.com * the letter ?g? designator after the part number indicates that the device is rohs-compliant. refer to www.mindspeed.com for a dditional information. revision history revision level date description g release july 2011 added m 02067g-13 ordering information and screen limit. f release january 2011 revised r modset value in table 1-3 , note 4. revised production te st conditions in table 1-5 . e release november 2010 updated ordering information, packaging information. added dc screen information. replaced all cx02067 re ferences with m02067. d preliminary october 2007 upda ted ordering information. c preliminary june 2006 added rohs package inform ation, updated format, no specification changes. b preliminary may 2005 updated to new data sh eet format. a advance october 2003 advance. m02067-12 and m02067-13 marking diagrams xxxxx yyww cc 02067 g part number lot number date and country code xxxxx yyww cc 02067 g -12 -12 m02067 g-12 m02067 g-13
02067-DSH-001-G mindspeed technologies ? iii mindspeed proprietary and confidential top view pin configuration (see figure 4-1 for detailed drawing) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 24 23 22 21 20 1 ena dis fail oca gnd bias out+ out- pd gnd gnd v cc gnd a c mpc tc slope tc start mod set oca set d in d in v cc 4mm bias mon 4mm mod mon v cc 2067
02067-DSH-001-G mindspeed technologies ? 1 mindspeed proprietary and confidential 1.0 product specification 1.1 absolute maximum ratings these are the absolute maximum ratings at or beyond which the ic can be expected to fail or be damaged. reliable operation at these extremes for any length of time is not implied. 1.2 recommended operating conditions table 1-1. absolute maximum ratings parameter rating units power supply (v cc -gnd) -0.5 to +6.0 v maximum laser bias current 120 ma maximum laser modulation curre nt (through out+, out-) 100 ma storage temperature -65 to +150 c junction temperature (die) -40 to +120 c table 1-2. recommended operating conditions parameter rating units power supply (v cc -gnd) 3.3 10% v operating ambient temperature -40 to +85 c
product specification 02067-DSH-001-G mindspeed technologies ? 2 mindspeed proprietary and confidential 1.3 dc characteristics table 1-3. dc characteristics parameter conditions min typ max units supply current excluding i bias and i mod but with i bias and i mod set to maximum -52 64 ma bias current adjust range limited by i ref across temperature range 4 - 100 ma bias current with output di sabled tx-dis = high - - 300 a maximum bias current limit t a = +85 c (adjustable) 100 (1) --ma monitor diode reverse bias voltage 2 - - v monitor diode current adjustment range 40 - 1000 a ttl/cmos input high voltage (enable/ disable) 2.0 - - v ttl/cmos input low voltage (enable/ disable) -- 0.8 v cmos output high voltage (fail,oca) 2.4 - - v cmos output low volt age (fail,oca) - - 0.4 v differential input impedanc e data and clock inputs 2.5 - - k common-mode input voltage? v cc -1.38 - v cc - v in (diff) 4 v self-biased common m ode input voltage dat a and clock inputs v cc -1.38 - v cc -0.47 v ratio of bias monitoring current, and bias current 55 ratio of modulation monitoring current, and modulation current 55 tx_disable ne gate time (2) c mpc = 3.8 nf .5 1 ms tx_disable assert time (3) 1s modulation off current (4) measured at pin out-, temperature at 75 c 300 a v cc = +3.3v 10%, t a = -40 c to +85 c, unless otherwise noted notes: (1)condition when pin 19 oca set is connected to ground. (2)time for optical power to reach 90% of its mean level following ne gation of tx_disable. (3)time for optical power to reach 10% of its mean level following as sertion of tx_disable. (4)data input voltage (vpin21 ? vpin22) > 300 mv, ena (pin 1) connected to v cc , dis (pin 2) connected to ground. r modset = 5.5 k , resistance to ground at gnda = 0.35 .
product specification 02067-DSH-001-G mindspeed technologies ? 3 mindspeed proprietary and confidential 1.4 ac characteristics 1.5 dc screen the m02067 is screened under the following conditions. t a = 25 c, v cc = 3.3 v, r modset = 8.46 k table 1-4. ac characteristics parameter conditions min. typ. max. units. differential input voltage = 2 x (d in + high -d in + low ) 300 - 1860 mv modulation current range 2.5 - 85 ma modulation current with output disabled dis = high - - 300 a programmable range for modulation current temperature coefficient adjustable 500 - 10 4 ppm/c programmable temper ature at which modulation current tc compensation enables programmed by choice of r tcslope 20 - 60 c modulation output rise/fall times 20% to 80% into 25 , with matching network - - 150 ps overshoot of m odulation output current into 25 load, with matching network -5 - +5 % modulation output pulse width distortion measured using alternating 1-0 pattern - - 50 ps modulation output determin istic jitter peak-to-peak. measured into 25 load using 27 - 1 prbs at 2.1 gbps - - 50 ps notes: vcc = +3.3v 10%, ta = -40 c to +85 c, unless otherwise noted table 1-5. dc screen part number parameter production test conditions screen limits m02067g-12 modulation current measured at pin out- load resistor at out- is 24 connected to v cc 41.8 ma min. to 50.8 ma max m02067g-13 modulation current measured at pin out- load resistor at out- is 24 connected to v cc 41.8 ma min. to 48.0 ma max
02067-DSH-001-G mindspeed technologies ? 4 mindspeed proprietary and confidential 2.0 pin description 2.1 pin descriptions table 2-1. pin descriptions pin number pin name function 1 ena bias and modulation out put enable (ttl/cmos). logi c high for normal operation. 2 dis bias and modulation out put disable ( ttl/cmos). logic low for normal operation. 3bias mon bias monitor. connect a resi stor between this pin and v cc to monitor bias current. connect to v cc if not used. 4mod mon modulation monitor. c onnect a resistor between this pin and v cc to monitor modulation current. connect to v cc if not used. 5fail mean power control failure indicator (ttl/cmos). goes lo w when control loop is no longer able to maintain constant current at pd. 6oca over-current alarm (ttl/cm os). goes low when i bias exceeds the preset bias current limit. 7 gnd ground. 8 bias laser bias current output. 9v cc power supply. 10 out+ positive modulation curren t output. sinks current when d in is high. 11 out- negative modulation current output. sinks current when d in is high. 12 gnd a ground to output stage. 13 pd monitor photodiode input. this input is connected to the monitor photodiode anode for automatic power control. 14 c mpc mean power control dominant pole capacitor. connect to v cc via a capacitor. 15 gnd ground. 16 tc slope connecting a resistor between this pin and ground sets the te mperature coefficient of i modset . 17 tc start secondary temperatur e coefficient of i mod . a resistor on this pin to ground sets the threshold temperature at which compensation starts. 18 mod set modulation current se t. connect a resistor betwee n this pin and ground to set. 19 oca set over-current alarm set. c onnect a resistor between th is pin and ground to set. 20 v cc power supply. 21 d in positive data input (pecl). self biased. 22 d in negative data input (pecl). self biased.
pin description 02067-DSH-001-G mindspeed technologies ? 5 mindspeed proprietary and confidential 23 v cc power supply. 24 gnd ground. note: center pad (pad 25) shoul d be connected to ground. table 2-1. pin descriptions (continued) pin number pin name function
02067-DSH-001-G mindspeed technologies ? 6 mindspeed proprietary and confidential 3.0 functional description 3.1 overview the m02067 laser driver consists of a high-speed modulation driver and a laser bias generator with mean power control (mpc). it is optimized for high speed, low power operation at 3.3v supply. figure 3-1 demonstrates the functionallity of the m02067. figure 3-1. m02067 block diagram x100 x60 failure detect dis ena 55 55 fail x1 oca data bias mon mod mon i bias i mod out- out+ v cc i bias r modset r tcslope r tcstart r mpcset v cc c mpc v ref pd r oca oca set rd gnda r shunt c shunt v cc
functional description 02067-DSH-001-G mindspeed technologies ? 7 mindspeed proprietary and confidential 3.2 features ? rise and fall times <150 ps ? dc or ac-coupled modulation drive ? independently programmable laser bias and modulation currents ? bias current to 100 ma and modulation current to 85 ma at v cc = 3.3v ? automatic laser power control, with programmable temperature compensation and ?slow-start? ? bias and modulation current monitors ? operates with +3.3v supply 3.3 modulator the modulator output stage is designed to drive up to 85 ma in either ac-coupled or dc-coupled mode. dc- coupled performance depends on the laser used. the m02067 modulation output is optimized for driving a 25 load; the minimum required voltage at out+ and out- is 0.6v. to interface with the laser diode, a matching resistor (rd) is required for impedance matching. an rc shunt network is necessary to compensate for the laser diode parasitic inductance, thereby improving the optical eye. typical values are r shunt = 51 , c shunt = 3.3 pf any capacitive loading at the cathode of a laser diode will degrad e the optical output perfor mance. an inductor is used to isolate the bias pin from the laser cathode. figure 3-2 shows the typical i mod vs r modset characteristic. figure 3-2. modulation current for given r modset resistor 0 20 40 60 80 100 120 0 4000 8000 12000 16000 20000 24000 28000 32000 r modset ( ) i mod (ma)
functional description 02067-DSH-001-G mindspeed technologies ? 8 mindspeed proprietary and confidential figure 3-3. fibre channel 1.0625 gbps electrical eye diagram figure 3-4. gigabit ethernet 1.25 gbps electrical eye diagram fibre channel 1.0625 gbps 30 mapp modulation current gigabit ethernet 1.25 gbps 30 mapp modulation current
functional description 02067-DSH-001-G mindspeed technologies ? 9 mindspeed proprietary and confidential 3.4 mean power control loop the m02067 employs a mean power control (mpc) loop to maintain a constant optical output power from the laser across temperature, time and power supply variations. la ser diodes used for communication purposes come with integrated photo-diodes to monitor the output power and provide the feedback for the mpc loop. the mpc loop (or its integrated safety features) cannot be used without this feedback. the mpc loop adjusts the laser bias current so that the monitor current from the photo-diode is matched to a reference current set by a single external resistor, r mpcset . the time constant of the mpc loop is determined by c mpc . (at 6 db cut off frequency) vs c mpc (for nominal process) figure 3-6 shows the bias current vs rmpcset over the full operating temperature range for a typical laser and monitor photodiode. figure 3-5. 2 x fibre channel 2.125 gbps electrical eye diagram table 3-1. mpc loop bandwidth c mpc 6 db cutoff frequency 0 17 mhz 1 nf 100 khz 10 nf 10 khz 100 nf 1 khz 2 x fibre channel 2.125 gbps 30 mapp modulation current
functional description 02067-DSH-001-G mindspeed technologies ? 10 mindspeed proprietary and confidential there are two safety features integrated into the mpc loop; an over-current alarm and an mpc loop failure alarm. the over-current alarm (oca) circuit limits the maximum bi as current generated by the m02067. the bias current limit is set by an external resistor to ground, r oca . when this limit is exceeded the oca pin is asserted low. figure 3-7 shows the maximum bias current limit vs r oca . the mpc loop failure alarm (fail) is generated by the m02067 when the mpc loop can no longer maintain the constant current set by r mpcset . when the mpc loop failure alarm is triggered the fail pin is asserted low. figure 3-6. bias current vs. r mpcset figure 3-7. maximum bias current vs. roca 0 20 40 60 80 100 120 0 5000 10000 15000 20000 25000 30000 35000 r mpcset bias current (ma) -40 0 25 50 85 symbols shown indicate c 0 10 20 30 40 50 60 70 80 90 100 0 10000 20000 30000 40000 r oca ( ) i oca (ma)
functional description 02067-DSH-001-G mindspeed technologies ? 11 mindspeed proprietary and confidential 3.5 enable control the m02067 incorporates a dual polarity laser enable function with both enable (ena) and disable (dis) inputs. under normal operating conditions the ena will be high wh ile dis is low. should ena go low (or dis go high) both the bias and modulatio n currents will be disabled. wire or-ing the oca and fail pins externally and conn ecting them to the ena pin will automatically disable the bias and modulation currents when a failure occurs. 3.6 current monitors the m02067 features bias and modulation current monitor outputs. the bias mon output sinks a current equal to nominally 1/55 of the laser bias current (i bias ). the mod mon output sinks a current equal to nominally 1/55 of the laser modulation current (i mod ). bias mon and mod mon should be connected through a pull-up resistor to v cc . choose a pull-up resistor value that ensures a voltage at bias mon greater than v cc - 1.6v and a voltage at mod mon greater than v cc - 1.0v. these pins should be tied to v cc if not used. 3.7 slow-start for laser safety and reliability, the m02067 incorporates a slow-start circui t that provides a delay of approximately 200 ns before enabling the laser diode.
functional description 02067-DSH-001-G mindspeed technologies ? 12 mindspeed proprietary and confidential 3.8 temperature compensation the m02067 features built in temperature compensation of the modulation current is set using two external resistors, tc slope and tc start see figure 3-8 . current pulled from tc slope adjusts the slope of the temperature compensation whereas current pulled from tc start sets the threshold temperature for the coefficient. figures 3-9 through 3-11 show i mod temperature compensation using a combination of resistor values for rtc slope and rtc start. figure 3-8. temperature compensation tc slope tc start 80ma 0ma +80c -40c 1 2 r mpcset
functional description 02067-DSH-001-G mindspeed technologies ? 13 mindspeed proprietary and confidential figure 3-9. figure 3-10. 0.04 0.042 0.044 0.046 0.048 0.05 0.052 0.054 0.056 0.058 0.06 -40-20 0 20406080100 temperature (c) i mod (a) 5000 10000 20000 32000 rtc slope - figures shown are in rtc start = 0 , v cc = 3.3v 0.04 0.045 0.05 0.055 0.06 0.065 0.07 0.075 0.08 0.085 -40-20 0 20406080100 temperature (c) i mod (a) 5000 10000 20000 32000 rtc slope - figures shown are in rtc start = 250 , v cc = 3.3v
functional description 02067-DSH-001-G mindspeed technologies ? 14 mindspeed proprietary and confidential 3.9 laser eye safety all lasers for commercial and industrial use, including lase rs for optical communications are classified for eye safety considerations in iec 60825-1, cdrh and other national standards. figure 3-11. note: the m02067 alone does not ensure that any application within which it is used will be fully compliant with the relevant eye-safety requirements. it remains the sole responsibility of the user of this co mponent to ensure that the application within which the m02067 is used meets all eye-safety requirements. 0.04 0.05 0.06 0.07 0.08 0.09 0.1 -40 -20 0 20 40 60 80 100 temperature (c) i mod (a) 5000 10000 20000 32000 rtc slope - figures shown are in rtc start = 400 , v cc = 3.3v
02067-DSH-001-G mindspeed technologies ? 15 mindspeed proprietary and confidential 4.0 packaging specification 4.1 packaging specification table 4-1. packaging specifications parameter value assembly location ase malaysia x dimension (mm) 4.00 0.10 y dimension (mm) 4.00 0.10 z dimension (mm) 0.90 0.10 pad standoff (mm) 0.02 + 0.03, -0.02 terminal finish 100% matte sn marking laser
packaging specification 02067-DSH-001-G mindspeed technologies ? 16 mindspeed proprietary and confidential figure 4-1. m02067 qfn24 package outline drawing
www.mindspeed.com general information: telephone: (949) 579-3000 headquarters - newport beach 4000 macarthur blvd., east tower newport beach, ca 92660 ? 2010 - 2011 mindspeed technologies ? , inc. all rights reserved. information in this document is provided in connection with mindspeed technologies ? ("mindspeed ? ") products. these materials are provided by mindspeed as a service to its customers and may be used for informational purposes only. except as provided in mindspeed?s terms and conditions of sale for such products or in any separate agreement related to this document, mindspeed assumes no liability whatsoever. mindspeed assumes no responsibility for errors or omission s in these materials. mindspeed may make changes to specifications and product descriptions at any time, without notice. mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incom patibilities arising from future changes to its specifications and product descriptions. no license, ex press or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. these materials are provided "as is" withou t warranty of any kind, either express or implied, relating to sale and/or use of mindspeed products including liability or warranties relating to fitness for a particular purpose, consequential or incidental damages, merchantability, or infringement of any patent, copyright or other intellectual property right. mindspeed further does not warrant the accuracy or completeness of the information, text, graph ics or other items contained within these materials. mindspeed shall not be liable fo r any special, indirect, incidental, or consequential damages, including without li mitation, lost revenues or lost profits, which may result from the use of these materials. mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. mindspeed customers using or selling mindspeed pr oducts for use in such applications do so at their own risk and agree to fully indemnify mindspeed for any damages resulting from such improper use or sale. 02067-DSH-001-G mindspeed technologies ? 17 mindspeed proprietary and confidential

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