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sy88022al 11.3g bps laser diode driver general description the sy88022al is a single 3.3v supply, small form - factor, multi - rate laser driver for telecom/datacom applications using fp/dfb lasers at data rates up to 11.3125gbps. the driver can deliver a modulation current of up to 75 ma into a 15? external load with a fast edge rate below 25ps, and a bias current of up to 80ma. having a n equalizer at the input will compensate for the sfp+ connector and line card long traces. the sy88022al interfaces with mic3003, micrel?s highly advanced optical module controller , as an easy - to - use chipset solution for sfp+ optical module application s . the mic3003 allows for many features , including modulation and bias current control, automatic power control, and temperature compensation using look up tables . the mic3003 comes in 4 mm 4mm qfn (mic3003gml) and 3 mm 3mm qfn (mic3003gfl) packages. the sy88022al operates on a single 3.3v power supply and comes in a 3mm 3mm qfn package. all support documentation can be found on micrel?s web site at: www.micrel.com . features ? operates from a single 3.3v supply ? data rate o peration up to 11.3125 gbps ? modulation current up to 7 5 ma ? fast edges rates, below 25ps ? bias current up to 80ma ? input equalizer ? small form factor 3mm 3mm qfn package applications ? multi - rate l an, man applications up to 11.3 gbps: 8xfc, 10g gbe, sonet oc - 192 ,, and sdh stm - 64 ? sfp+, xfp, xpak, xenpak, x2, msa 300 optical modules ? obsai, cpri markets ? fibre c hannel s torage a rea n etworks ? datacom/ e nterprise ? telecom ? wireless b ase s tations ____________________________________________________________________________________ typical application circuit . micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 (408) 944- 0800 ? fax + 1 (408) 474 - 1000 ? http://www.micrel.com january 13 , 2015 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al ordering information part number package type operating range package marking lead finish sy88022almg 3mm 3mm qfn -16 industrial 022a with pb - free bar line indicator nipdau pb - free sy88022almg tr ( 1 ) 3mm 3mm qfn -16 industrial 022a with pb - free bar line indicator nipdau pb - free note: 1. tape and reel . pin configuration 16- pin 3mm 3mm qfn (top view) january 1 3 , 2015 2 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al pin description pin number pin name pin function 1, 4, 9, 12 vcc supply voltage. bypass with a 0.1 f//0.01 f low esr capacitor as close to vcc pin as possible. 8, 14, exposed pad gnd ground. ground and exposed pad must be connected to the plane of the most negative potential. 2 din+ non - inverting input data. internally terminated with 50 ? . 3 din ? inverting input data. internally terminated with 50 ? . 5 modset modulation curren t setting and control. apply a voltage within the range 0 v - 1.2v to this pin to set the modulation current. input impedance 25k? . 6 /en active low ttl. internal 75 k ? pull down to gnd. the driver is enabled when this pin is unconnected or /en asserted low and disabled when /en asserted high. 7 eqset install a resistor from this pin to gnd to set the desired equalization level. 0 ? will provide maximum equalization a nd 2 k? or higher will provide negligible equalization. leave open if no equalization is needed. 10 mod ? inverted modulation current output. provides modulation current when input data is negative. internally terminated with 25 ? to vcc. 11 mod+ non - inverted modulation current output. provides modulation current when input data is positive. internally terminated with 25 ? to vcc. 13 bias b ias c urrent o utput . 15 biasmon bias c urrent m onitor. outputs a current which represents 1/100 th of the bias current. install an external resistor from this pin to gnd to convert the output current to a voltage proportional to the bias current . 16 biasset bias current setting and control. apply a voltage within the range 0 v - 1.2v to this pin to set the bias current. input impedance 25k? . truth table notes: 2. i mod = 0 when mod+ = h. 3. assuming that the laser cathode is tied to mod+ . din+ din - /en mod+ ( 2 ) mod - laser output ( 3 ) l h l h l l h l l l h h x x h h l l january 1 3 , 2015 3 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al absolute maximum ratings ( 4 ) supply voltage (v in ) ................................ ..... ? 0.5v to +4.0v cml input voltage (v in ) .................... v cc ? 1.2v to v cc +0.5v ttl control input voltage (v in ) ........................... 0v to vcc lead temperature (soldering, 20sec.) ..................... +260c storage temperature (ts ) ......................... ? 65c to +150c operating ratings ( 5 ) supply voltage (v cc ) ................................ .... +3.0v to +3.6v ambient temperature (t a ) .......................... ? 40c to +85c package thermal resistance ( 6 ) qfn ( ja ) still - a ir ................................ ....................... 60c/w ( jb ) ................................ ................................ ... 33c/w dc electrical characteristics t a = ? 40c to +85c and v cc = +3.0v to +3.6v, unless otherwise noted . 25 ? external load . typical values are v cc = +3.3v, t a = 25c, i mod = 30ma, i bias = 30ma. symbol parameter condition min typ max units i cc power supply current modulation and bias currents excluded 65 ( 7 ) 85 ( 7 ) ma v mod_min minimum voltage required at the driver output (headroom) for proper operation 1.2 v v bias_min minimum voltage required at the bias output (headroom) for proper operation 1.2 v r in input resistance, single ended 45 50 55 ? v id differential input voltage swing 200 1000 mv pp v il /en input low 0.8 v v ih /en input high 2 v i bias bias current 10 80 ma i bias _off bias off current current at bias when the device is disabled 150 a i biasmon / i bias i biasmon to i bias ratio resistor installed from biasmon to gnd 10 a/ma accuracy of i biasmon to i bias ratio resistor installed from biasmon to gnd -5 +5 % rmodset input resistance at modset pin 25 k? vmodset voltage range at modset pin imod range 10ma to 60ma 1.2 v rbiasset input resistance at biasset pin 25 k? vbiasset voltage range at biasset pin ibias range 10ma to 80ma 1.2 v note: 4. exceeding the absolute maximum ratings may damage the device. 5. the device is not guaranteed to function outside its operating rating. 6. devices are esd sensitive. handling precautions recommended. human body model, 1.5 k ? in series with 100pf. 7. i mod and i bias not included. mod+/- tied to vcc through inductors. maximum icc measured with i mod = 60 ma, i bias = 80 ma, and vcc=3.6v . january 1 3 , 2015 4 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al ac electrical characteristics t a = ? 40c to +85c and v cc = +3.0v to +3.6v, unless otherwise noted. typical values are v cc = +3.3v, t a = 25c, i mod = 30ma, i bias = 30ma . symbol parameter condition min typ max units data rate nrz 11.3125 gbps i mod max ( 8 ) maximum modulation current ac - coupled into 25 ? external load 60 ma ac - coupled into 15 ? external load 75 ac - coupled into 10 ? external load 85 i mod min ( 8 ) minimum modulation current ac - coupled into 25 ? external load 10 ma i mod_off modulation off current current at mod+ and mod - when the device is disabled 150 a t r output current rise time 20% to 80%, 25 ? load 25 ps t f output current fall time 20% to 80%, 25 ? load 25 ps dj deterministic jitter k25.8 pattern at 11.3gbps, v in = 200mvpp 4 ps pp rj random jitter k25.8 pattern at 11.3gbps, v in = 200mvpp 0.3 ps pp notes: 8. i mod is defined as the current going into the external load. january 1 3 , 2015 5 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al typical characteristics ( 9) note : 9. the plotted modulation current is the total modulation current which includes the current into the internal 25? termination and i mod into the external load. 91.5 92 92.5 93 93.5 94 94.5 95 95.5 3.8 20 36.2 52.4 68.6 85.6 ibias/ibiasmon bias current (ma) ibias/ibiasmon vs bias 0 10 20 30 40 50 60 70 80 90 100 100 300 500 700 900 1100 bias current (ma) biasset (mv) bias gain 0 20 40 60 80 100 120 100 300 500 700 900 1100 1300 total modulation current (ma) modset (mv) modulation gain january 1 3 , 2015 6 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al functional characteristics electrical eye diagram at 10.3125gbps january 1 3 , 2015 7 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al functional block diagram input and output stages figure 1 . simplified input stage figure 2 . simplified output stage january 1 3 , 2015 8 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al functional description as shown i n the block diagram, the driver is composed of an input equalizer, a modulation block consisting of a pre - driver, and a current source. equalizer the input equalizer allows for compensation up to 12? of the fr4 microstrip trace or equivalent. i n high frequency components , t he equalization restores the losses of the signal caused by its travel along the line card traces and through th e connectors between the line card and the module before it reaches the input stage. the amount of equalization is programmable with a resistor from p in 7 to g round . modulator the modulator consists of a pre - driver and a current source. the modulat ion current is set in the pre - driver by applying a voltage within the range 0 v - 1.2v to p in 5 (modset). the pre - driver provides a current t o the output stage. this s tage consists of a current source composed from a differential pair in which collectors are connected t o mod+/mod ? pins and ha ve 25? internal termination to vcc. the modulation gain curve shows modulation current variation versus the applied voltage at modset pin. bias the bias is set by applying a voltage within a 0 v - 1.2v range to pi n 16 (biasset). the bias gain curve on page 6 shows bias current variation versus the applied voltage at p in 16. the sy88022al driver is designed to work with one of the micrel?s mic300x series of controllers which have a built - in automatic power control (apc ) circuit and a serial interface for programming modulation and bias, temperature compensation tables, settin g registers, and monitoring registers read back. refer to the optical module controllers datasheets for more details. the applications section below shows how to set up the driver to work correctly with the mic300x controller. january 1 3 , 2015 9 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al application information the following typical application schematic shows the diagram for a typical 10g optical transceiver using the micrel?s chip set comprised from sy88022al driver, sy88053cl/073l/063cl/083l post amplifier, and fom management ic mic3003. typical application schematic january 1 3 , 2015 10 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al package information ( 10 ) 16- pin (3mm 3mm) qfn -16 note: 10. package information is correct as of the publication date. for updates and most current information, go to www.micrel.com . january 1 3 , 2015 11 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690
micrel, inc. sy88022al micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944 - 0800 fax +1 (408) 474- 1000 web http://www.micrel.com micrel, inc. is a leading global manufacturer of ic solutions for the worldwide high performance linear and power, lan, and t iming & communications markets. the company?s products include advanced mixed - signal, analog & power semiconductors; high - performance communication, clock management, mems - based clock oscillators & crystal - less clock generators, ethernet switches, and physical la yer transceiver ics. company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer products. corporation headquarters and state - of- the - art wafer fabrication facilities are located in san jose, ca, with regional sales and support office s and advanced technology design centers situated throughout the americas, europe, and asia. additionally, the company maintains a n extensive network of di stributors and reps worldwide. micrel makes no representations or warranties with respect to the ac curacy or completeness of the information furnished in this datasheet. this information is not intended as a warranty and micrel does not assume responsibility for its use. micrel reserves the right t o change circuitry, specifications and descriptions at any time without notice. no license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. except as provided in micrel?s terms and conditions of sale for such products, m icrel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent , copyright, or other intellectual property right. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where mal function of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. a purchas er?s use or sale of micrel products for use in life support appliances, devices or systems is a purchaser?s own risk and purc haser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2015 micrel, incorporated. january 1 3 , 2015 12 revision 1.0 hbwhelp@micrel.com or (408) 955 - 1690

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