parameter maximum data rate modulation current modulation current when shutdown symbol 80 - 70 1.0 2.0 - v ip : adjusted for 70ma, v ib =-5.2v, hdi="h" v ip = -4.1v, v ib = -5.2v, hdi = "h" gb/s ma ma ip nrz ipsd bias current when shutdown 2.0 1.0 - v ib = -3.4v, v ip = -5.2v, sd = -0.9v ma ibsd bias current 70 - - v ib = -3.4v, v ip = -5.2v, sd = -1.7v ma ib power supply current 100 260 160 v ip = -5.2v, v ib = -5.2v ma iss test conditions unit limit typ. max. min. electrical characteristics (unless otherwise specified, tc=25 c, vss=-5.2v, rl=25 ? ) fall time - 20% to 80% 100 80 ps tf - 100 80 ps ip=70ma rise time tr 90 110 -% 2.5gb/s, ip=70ma, sel="h" duty control range duty - 100 60 ps sel="h" setup time ts -60 40 ps (re-timing mode) hold time th -- -- -1.85 -0.80 -1.0 v -0.98 -0.40 -0.50 v -0.10 - -0.0 v rmk=1k ? cmk=1nf nrz duty=100 % mark density 100% 50% 0% mark density monitor output mk 2.5 - - 1 edition 2.1 febraury 2001 2.5gb/s gaas laser driver with re-timing function FMM3175VI parameter symbol peak current control voltage v ss -2.0 to v ss +1.5 v v ip bias current control voltage v ss -2.0 to v ss +2.1 v v ib input voltage v ss to 0 v v in supply voltage -7.0 to 0 v v ss storage temperature -55 to 125 c t stg power supply current 400 ma i ss ratings unit absolute maximum ratings ( v dd = 0v, ta=25 c) features ?operation speed up to 2.5gb/s, nrz ?built in d-ff (re-timing and bypass mode: selectable) ?peak modulation current with 25 ? load: 70ma (min.) ?bias current: 70ma (min.) ?peak and bias current adjustment ?ecl compatible input ?single -5.2v power supply ?duty ratio adjustment ?output shutdown switch description the FMM3175VI is a 2.5gb/s(oc-48) laser driver with re-timing function. a d-ff is built in, and the re-timing and bypass mode are selectable using a selector(sel) signal. the peak modulation currents are 70ma (min.) with 25 ? load, and the bias current is available up to 70ma (min.) the FMM3175VI also has a duty control circuit and an output shutdown switch.
2 FMM3175VI parameter supply voltage peak current control voltage bias current control voltage symbol v ss +1.8 v ss v ss +1.1 - - v ss v v v v duty control voltage -0.80 - -1.80 v case temperature +85 - 0.0 c v ip v ss test conditions unit limit typ. max. min. recommended operating conditions -5.46 -5.20 -4.94 input level high input level low v v ih v il -1.05 -0.90 -0.80 -2.00 -1.70 -1.55 v ib v dut t c FMM3175VI block diagram sel sel sd vdut ipmon ibmon vib hdi hdin hcki xout out ibout mk xmk vip d-ff buffer peak current driver bias current driver mark ratio det. 2.5gb/s gaas laser driver with re-timing function
3 FMM3175VI 2.5gb/s gaas laser driver with re-timing function sel l h re-timing (d-ff: active) bypass(d-ff: bypassed) operation mode the "sel" signal determines the operation mode between re-timing and bypass modes. the truth table is as follows: operation mode sd l h disable enable output current shutdown control hdi(hdin) hcki out l(h) - h(l) off on on off qxq xout function (re-timing mode) : positive edge, : negative edge, q/xq: hold previous state hdi(hdin) hcki out l(h) h(l) - - off on on off xout function (bypass mode)
output duty control characteristics -1.5 -1.4 -1.3 -1.2 -1.1 vdut (v) 120 110 115 105 95 100 85 90 80 duty (%) peak current control characteristics -5.4 -5.0 -4.6 -4.2 -3.8 peak current control voltage v ip (v) 120 100 60 80 20 40 0 peak current ip(ma) v ss = -5.2v v ib = -5.2v tc = 0 c tc = 25 c tc = 85 c 4 FMM3175VI r1: 50 ? r2: 25 ? r3: 500 ? r4: 1k ? r5: 0~1k ? r6: 50 ? rmk: 1k ? cmk: 1000pf other capacitor: 0.068 f v tt : termination voltage 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 vib ibmon vdut mk hdi vss cmk rmk rmk cmk vss vss select v tt shutdown signal v tt vss r5 r3 r4 r5 r1 r1 r1 r1 r1 xmk hdin ibout hcki out sel xout sd vip vss ipmon pulse pattern generator oscilloscope test circuit 20db att a a r2 r6 r2 r3 r5 vss 2.5gb/s gaas laser driver with re-timing function
bias current vs. bias current control voltage output waveform -5.4 -5.0 -4.6 -4.2 -3.8 -3.4 -3.0 bias current control voltage vib(v) h:100ps/div. fb = 2.5gb/s v ss = -5.2v, tc = 25 c rl = 25 ? 100 80 90 40 50 60 70 10 20 30 0 bias current ib(ma) v:1.0v/div. v ss = -5.2v v ip = -5.2v tc = 0 c tc = 25 c tc = 85 c 5 FMM3175VI FMM3175VI pin assignment pin description pin name vib vdut hdi hdin hcki sel sd vss pin no. 1 2 3 4 5 6 7 8 output duty control voltage data input (true) bias current control voltage data input (invert) clock input operation mode selection output current shutdown input supply voltage modulation current control voltage bias current output bias current monitor (vss: -5.2v) description ground pin - ground\ heat sink(back side) - ground pin name ipmon vip xout out ibout xmk mk ibmon pin no. 9 10 11 12 13 14 15 16 modulation current monitor (vss:-5.2v) modulation current output (true) modulation current output (invert) mark density monitor output (invert) mark density monitor output (true) description 1 16 vib hdin sel hcki vss vdut hdi sd ibmon ibout xout out ipmon mk xmk vip 9 8 top view 2.5gb/s gaas laser driver with re-timing function
6 fujitsu compound semiconductor products contain gallium arsenide (gaas) which can be hazardous to the human body and the environment. for safety, observe the following procedures: caution ?do not put this product into the mouth. ?do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed. ?observe government laws and company regulations when discarding this product. this product must be discarded in accordance with methods specified by applicable hazardous waste procedures. fujitsu limited reserves the right to change products and specifications without notice. the information does not convey any license under rights of fujitsu limited or others. 2001 fujitsu compound semiconductor, inc. printed in u.s.a. fcsi0101m200 FMM3175VI (2.0) (0.9) (0.25) 6.4 5.0 0.7 0.7 5.5 1.2 0.15 4.55 0.65 0.18 (0.4) 5.6 (3.3) (3.2) (0.45) ( 2.8) (3.1) (3.6) (3.9) case style "vi" 16 9 18 0.13 m 0.1 ground pin heat sink unit: mm ?i?package unit: mm 2.5gb/s gaas laser driver with re-timing function fujitsu quantum devices limited business development division 11th floor, hachioji daiichi-seimei bldg. 3-20-6 myojin-cho hachioji-city, tokyo 192-0046, japan tel: +81-426-43-5885 fax: +81-426-43-5582 for further information please contact: fujitsu compound semiconductor, inc. americas & r.o.w. 2355 zanker rd. san jose, ca 95131-1138, u.s.a. phone: (408) 232-9500 fax: (408) 428-9111 www.fcsi.fujitsu.com fujitsu quantum devices europe ltd. network house norreys drive maidenhead, berkshire sl6 4fj united kingdom tel: +44 (0) 1628 504800 fax: +44 (0) 1628 504888 fujitsu quantum devices singapore pte ltd. hong kong branch rm. 1101, ocean centre, 5 canton rd. tsim sha tsui, kowloon, hong kong tel: +852-23770226 fax: +852-23763269
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