gennum corporation p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946 e-mail: info@gennum.com www.gennum.com revision date: june 2004 document no. 22212 - 2 data sheet gs9064 key features ? smpte 259 and sm pte 344 compliant automatic cable equalization supports dvb-asi at 270mb/s typical maximum equalized length of belden 1694a cable at 270mb/s is 350m 50 ? differential output (with internal 50 ? pull-ups) cable length indicator output mute based on maximu m cable length adjust or manual override pb-free and green single 3.3v power supply operation operating temperature range: 0c to +70c pin compatible with hdlinx ? ii gs1524 multirate sdi adaptive cable equalizer applications ? smpte 259m coaxial cable serial digital interfaces description the gs9064 is a second-generation high-speed bipolar integrated circuit designed to equalize and restore signals received over 75 ? co-axial cable at data rates from 143mb/s up to 540mb/s. the gs9064 is designed to support smpte 344m and smpte 259m and is optimized for performance at 270mb/s. the gs9064 features dc restoration to compensate for the dc content of smpte pathological test patterns, and incorporates a cable length indicator (cli) that provides a linear indication of the amount of cable being equalized. a voltage programmable mute threshold (mcladj) is included to allow muting of the gs9064 output when a selected cable length is reached. this feature allows the gs9064 to distinguish between low amplitude sdi signals and noise at the input of the device. the cd /mute pin provides an indication of the gs9064 mute status in addition to functioning as a mute control input. the output of the gs9064 may be forced to an active or a mute condition by applying a voltage to the cd /mute pin. gs9064 functional block diagram cable length indicator/adjustor carrier detect mute equalizer dc restore output agc cli cd/mute sdo sdo sdi sdi mcladj bypass gs9064 sd sdi adaptive cable equalizer
gennum corporation 22212 - 2 2 of 10 gs9064 table of contents 1. pin out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.2 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2. electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.2 dc electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.3 ac electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.4 input/output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.5 typical performance curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3. detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 4. application reference design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 4.1 pcb layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2 typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 5. references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 6. package & ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 6.1 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 6.2 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 7. revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
gennum corporation 22212 - 2 3 of 10 gs9064 1. pin out 1.1 pin assignment 1.2 pin descriptions pin number name type description 1 cli output cable length indicator an analog voltage proportional to the cable length connected to the serial digital input. note: cli is recommended for data rates up to 360 mb/s only. 2, 15 v cc input power most positive power supply connection. connect to +3.3v. 3, 6, 11, 14 v ee input power most negative power supply connection. connect to ground. 4, 5 sdi, sdi input serial digital differential inputs. 7, 8 agc+, agc- passive input external agc capacitor. should be set to 1f. 9 bypass input forces the core stage and the dc restore stage into bypass mode when high. no equalization occurs in this mode. 10 mcladj input maximum cable length adjust adjusts the approximate maximum amount of cable to be equalized (from 0m to the maximum cable length). the output is muted (latched to the last state) when the maximum cable length is achieved. note: mcladj is recommended for data rates up to 360 mb/s only. 12, 13 sdo , sdo output equalized serial digital differential outputs. 16 cd /mute input / output mute indicator-control / carrier detect output: the output voltage drops to below 1.2v when the carrier is present and the data outputs are active. input: if the cd /mute pin is tied to ground, the data output will never mute and the mcladj setting is overwritten. if the cd /mute pin is tied to vcc, the data outputs will always mute and the mcladj setting is overwritten. cli v cc v ee sdi sdi v ee agc+ agc- cd/mute v cc v ee sdo sdo v ee mcladj bypass gs9064 16pin soic top view 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
gennum corporation 22212 - 2 4 of 10 gs9064 2. electrical characteristics 2.1 absolute maximum ratings parameter value supply voltage -0.5v to +3.6 v dc input esd voltage 500v storage temperature range -50c< t s < 125c input voltage range (any input) -0.3 to (v cc + 0.3)v operating temperature range 0c to 70c power dissipation 300mw lead temperature (soldering, 10 sec.) 260c 2.2 dc electrical characteristics v cc = 3.3v , v ee = 0v , t a = 0 c to 70c , 270mb/s, unless otherwise shown parameter symbol conditions min typical max units test level notes supply voltage v cc 3.1 3.3 3.5 v 1 - power consumption p d t a = 25c - 265 - mw 5 - supply current s t a = 25c - 80 - ma 1 - input common mode voltage v cmin -1.75-v10- output common mode voltage v cmout -v cc - ? v sdo /2 - mv 7 - cli dc voltage cable length = 0m - 2.5 - v 1 - no signal (max cable length) -1.9-v7- floating mcladj dc voltage - 1.3 - v 7 - mcladj range 0m to max cable length -0.69-v7- cd /mute output voltage v cd /mute(oh) carrier not present 2.6 - - v 1 - v cd /mute(ol) carrier present - - 1.2 1 - cd /mute input voltage required to force outputs to mute v cd /mute) min to mute 3.0 - - v 7 - cd /mute input voltage required to force outputs to activate v cd /mute max to activate - - 2.0 v 7 - test levels 1. production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges. 2. production test at room temperature and nominal supply volt age with guardbands for supply and temperature ranges using correlated test. 3. production test at room temperature and nominal supply voltage. 4. qa sample test. 5. calculated result based on level 1, 2, or 3. 6. not tested. guaranteed by design simulations. 7. not tested. based on characterization of nominal parts. 8. not tested. based on existing design/characterization data of similar product. 9. indirect test. 10. wafer probe
gennum corporation 22212 - 2 5 of 10 gs9064 2.3 ac electrical characteristics v cc = 3.3v , v ee = 0v , t a = 0 c to 70c , 270mb/s, unless otherwise shown parameter symbol conditions min typical max units test level notes serial input data rate dr sdi eq active 143 - 540 mb/s 6 - input swing ? v sdi differential, t a =25c cable length = 0m 720 800 950 mv p-p 1- output swing ? v sdo differential, 50 ohm load, t a =25c -750 -mv p-p 1- maximum equalized cable length 270mb/s, belden 8281 0.20ui output jitter eq pathological -280 -m 7 - 540mb/s, belden 8281 0.20ui output jitter eq pathological -180 -m 7 - output rise/fall time t r , t f 20% - 80% - 80 220 ps 1 - mismatch in rise/fall time --30ps1- duty cycle distortion - - 100 ps 7 - overshoot - - 10 % 1 - input return loss irl 15 - - db 7 - test levels 1. production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges. 2. production test at room temperature and nominal supply vo ltage with guardbands for supply and temperature ranges using correlated test. 3. production test at room temperature and nominal supply voltage. 4. qa sample test. 5. calculated result based on level 1, 2, or 3. 6. not tested. guaranteed by design simulations. 7. not tested. based on characterization of nominal parts. 8. not tested. based on existing design/characterization data of similar product. 9. indirect test. 10. wafer probe
gennum corporation 22212 - 2 6 of 10 gs9064 2.4 input/output circuits all resistors in ohms, all capacitors in farads, unless otherwise shown. figure 1 input equivalent circuit figure 2 mcladj equivalent circuit figure 3 cd /mute circuit figure 4 output circuit figure 5 cli output circuit figure 6 bypass circuit 3k 3.6k 3k 3.6k rc sdi sdi v cc mcladj 12k 150 + - 7.5k output stage mute control v cc cd/mute 50 50 sdo sdo 10k 10k v cc cli - + bypass internal reference
gennum corporation 22212 - 2 7 of 10 gs9064 2.5 typical performance curves all resistors in ohms, all capacitors in farads, unless otherwise shown. figure 7 power consumption figure 8 cli voltage vs 8281 cable length, 270mb/s figure 9 input 8281, 280m, 270mb/s figure 10 mcladj input voltage vs 1694a cable length, 270mb/s figure 11 typical peak-to-peak jitter, prn2 23 -1, 1694a, 270mb/s figure 12 output 8281, 280m, 270mb/s 350 300 250 200 150 100 50 0 0 20 40 60 80 temperature (?c) power consumption (mw) cable length (m) cli voltage (v) 3.5 3 2.5 2 1.5 0 50 100 150 200 250 300 cable length (m) mcladj voltage (v) 2.0 0 50 100 150 200 250 300 2.5 3.0 3.5 1100 900 700 500 400 300 200 100 0 0 100 200 300 400 cable length (m) jitter (ps)
gennum corporation 22212 - 2 8 of 10 gs9064 3. detailed description the gs9064 is a high speed bipolar ic designed to equalize sd serial digital signals. the device can typically equalize 350 meters of belden 1694a cable at 270mb/s. powered from a single +3.3v or -3.3v power supply, the device consumes approximately 240mw of power. 3.1 serial digital input the sd serial digital input signal may be connected to the input pins (sdi/sdi ) in either a differential or single ended configuration. ac coupling of the inputs is recommended, as the sdi and sdi inputs are internally biased at approximately +1.8 volts. 3.2 automatic cable equalization the input signal passes through a variable gain equalizing stage whose frequency response closely matches the inverse of the cable loss characteristic. in addition, the vari- ation of the frequency response with control voltage imitates the variation of the inverse cable loss characteristic with cable length. the edge energy of the equaliz ed signal is monitored by a detector circuit which produces an error signal corresponding to the difference between the desired edge energy and the actual edge energy. this error signal is integrated by both an internal and an external agc filter capacitor providing a steady co ntrol voltage for the gain stage. as the frequency resp onse of the gain stage is automatically varied by t he application of negative feedback, the edge energy of the equalized signal is kept at a constant level which is representative of the original edge energy at the transmitter. the equalized signal is also dc restored, effectively restor- ing the logic threshold of the equalized signal to its correct level independent of shifts du e to ac coupling. the digital output signals have a nominal voltage of 750mv pp differen- tial, or 375mv pp single ended when terminated with 50 ? as shown below in figure 13. figure 13 typical output voltage levels 3.3 cable length indication & carrier detect/mute the gs9064 incorporates an a nalog cable length indicator (cli) output and a programma ble threshold output mute (mcladj). in addition, a multi-function cd /mute pin allows control of the gs9064 mute functionality for sd inputs. 3.3.1 cable length indicator the voltage output of the cli pin is a representation of the amount of cable present at the inputs of the device. figure 8 shows the cli voltage versus cable length (signal strength). at 270mb/s with no cable length and 800mv input signal levels, the cli output vo ltage is approximately 2.5v. as the cable length is in creased, the cli voltage decreases, thereby providing an approximate correlation between the cli voltag e and cable length 3.3.2 programmable mute threshold a voltage programmable mute threshold (mcladj) is included to allow muting of the gs9064 output when a selected cable length is reached. this feature allows the device to distinguish between low amplitude sdi signals and noise at its input. figure 10 shows the rela tionship between the voltage applied to the mcladj pin and the input cable length accepted by the gs9064. for consistent accurate results this may need to be calibrated for each device. the mcladj pin may be left unconnected for applications where output muting is not required. this feature has been designed for use in applications such as routers where signal crosstalk and circuit noise cause the equalizer to output erroneous data when no input signal is actually present. the use of a carrier detect function with a fixed internal reference does not solve this problem since the signal to noise ratio on the circuit board could be significantly less than the defa ult signal detection level set by the on-chip reference. note: mcladj and cli are only recommended for data rates up to 360 mb/s. 3.3.3 carrier detect/mute applying a high input to the cd /mute pin forces the gs9064 outputs to a muted condition. see the dc electrical characteristics table for voltage levels. in this condition the outputs are latched to the last logic level present at the output to avoid signal crosstalk. applying a low input to the cd /mute pin will force the gs9064 outputs to remain active regardless of input cable length or the voltage applied to the mcladj pin. see the dc electrical characteristics table for voltage levels. 50 50 sdo sdo +187.5mv -187.5mv v cm = 2.925v typical +187.5mv -187.5mv v cm = 2.925v typical
gennum corporation 22212 - 2 9 of 10 gs9064 when used as an output, the cd /mute pin will provide an indication of the output mute status. the cd /mute voltage will fall to below 1.2v when the carrier is present and the data outputs are active. note: the cd /mute pin is not functional in bypass mode. 4. application reference design 4.1 pcb layout an fr-4 dielectric can be used, however, controlled impedance transmission lines are required for pcb traces longer than approximately 1cm. note the following pcb artwork features used to optimize performance: 1. the pcb ground plane is removed under the gs9064 input and output components to minimize parasitic capacitance. 2. high speed traces are curved to minimize impedance changes. 4.2 typical application circuit 5. references compliant with smpte 259m and smpte 344. 6.4n 10n bypass mcladj 75 sdo bnc vcc cli 1u 10n 75 4u7 4u7 gs9064 4 5 16 6 2 12 13 3 11 14 15 8 + + + 9 10 1 7 sdi sdi cd/mute vee vcc sdo sdo vee vee vee vcc agc- bypass mcladj cli agc+ 1u sdo cd/mute 37.4 1u vcc note: all resistors in ohms, capacitors in farads, and inductors in henrys, unless otherwise noted.
22212 - 2 10 of 10 gennum corporation mailing address: p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946 shipping address: 970 fraser drive, burlington, ontario, canada l7l 5p5 gennum japan corporation shinjuku green tower building 27f, 6-14-1, nishi shinjuku, shinjuku-ku, tokyo, 160-0023 japan tel. +81 (03) 3349-5501, fax. +81 (03) 3349-5505 gennum uk limited 25 long garden walk, farnham, surrey, england gu9 7hx tel. +44 (0)1252 747 000 fax +44 (0)1252 726 523 gennum corporation assumes no responsibility for the use of any circuits described herein and makes no representations that th ey are free from patent infringement. ? copyright july 2002 gennum corporation. all rights reserved. printed in canada. gs9064 caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation document identification data sheet the product is in production. gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. 6. package & ordering information 6.1 package dimensions 16 pin soic symbol a a1 a2 b c d e e h l1 l y min. min. max. max. nom. nom. millimeter inch * controlling dimension: mm 1.35 0.10 1.30 0.33 0.19 9.80 3.80 5.80 0.40 0? 1.63 0.15 1.40 0.41 9.91 3.90 1.27 6.00 0.64 1.07 1.75 0.25 1.50 0.51 0.25 10.01 4.00 0.053 0.004 0.051 0.013 0.064 0.006 0.055 0.016 0.390 0.154 0.50 0.069 0.010 0.059 0.020 0.010 0.394 0.157 0? 8? 8? 6.20 1.27 0.10 0.004 0.042 0.025 0.016 0.228 0.236 0.244 0.050 0.150 0.386 0.007 detail f l 16 9 1 8 b eh 0.010" gauge plane seating plane c y a1 see detail f a2 a d e l1 6.2 ordering information part number package temperature range pb-free and green gs9064-ckd 16 pin soic 0 c to 70c no GS9064-CKDE3 16 pin soic 0 c to 70c yes 7. revision history version ecr date changes and/or modifications a 120607 july 2002 new document b 125774 july 2002 added detailed block descript ions and initial applications information. c 126688 september 2002 change packaging from lga to soic for pin compatibility with the gs1524. 0 127023 december 2002 upgrade document to preliminary data sheet and edit ac/dc characteristics to match current design specification limits. 1 128542 june 2003 upgrade document to data sheet. power number corrected. 2 133975 june 2004 added lead-free and green information.
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