not recommended for new designs part number package type temperature range pb-free and green GS9004DCKB 14 pin soic 0 o c to 70 o cno gs9004dctb 14 pin soic tape 0 o c to 70 o cno GS9004DCKBe3 14 pin soic 0 o c to 70 o c yes features ? automatic cable equalization typically greater than 300 m of high quality cable at 270 mb/s typically 300 m of high quality cable at 360 mb/s drop in replacement for gs9004c capability to drive 50 loads (to v tt ) fully compatible with smpte 259m and operational to 400 mb/s signal strength indicator output 'eye' monitor 14 pin soic packaging single +5 or -5 volt power supply operation pb-free and green genlinx ? gs9004d serial digital cable equalizer functional block diagram data sheet device description the gennum gs9004d is an improved monolithic automatic cable equalizer developed for smpte/ebu scrambled nrzi serial d igital video signals. while there are no plans to discontinue the gs9004d, gennum has developed a successor product with improved features and performance called the gs9024. the gs9024 is recommended for new designs. this device features dc restoration to pass the pathological test signals and fully automatic equalization in order to meet the smpte 259m serial interface standard. the data and data outputs typically deliver 800 mv (p- p) equalized signals into 50 ? loads (to v tt ). these signals can be used to feed cable driver circuits for serial distribution amplifier applications. this device also incorporates an analog signal strength indicator (ssi) which provides a 0.5 v to 0 v output relative to v cc , indicating the amount of equalization being applied to the signal. the gs9004d features an output 'eye' monitor (oem), which allows verification of signal integrity after equalization, prior to reslicing. operating with a single +5 or -5 volt supply, the gs9004d typically draws 52 ma of current. ordering information applications front-end cable equalization for digital video systems input equalization for serial digital distribution amplifiers, routers, production switchers and other receiving equipment document no. 32486 - 0 gennum corporation p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946 web site: www.gennum.com e-mail: info@gennum.com revision date: july 2004 gs9004d in+ agc capacitor signal strength indicator voltage variable filter logic comparator filter control peak detector dc restorer data 6 8 7 14 13 data 9 in- 3 output 'eye' monitor
2 of 4 not recommended for new designs 32486 -0 1v cc (gnd) s most positive supply voltage (ecl outputs) 2v cc (gnd) s most positive supply voltage (dc restore/eye monitor) 3 oem o output 'eye' monitor 4v cc (gnd) s most positive supply voltage (equalizer) 5 nc no connection 6 ssi o signal strength indicator 7 agc i agc capacitor connection 8 in+ i non-inverting signal 9 in- i inverting signal 10 gnd(v ee ) s most negative supply voltage 11 gnd(v ee ) s most negative supply voltage 12 gnd1(v ee1 ) s most negative supply voltage for eye monitor 13 data o data (true) 14 data o data (inverse) parameter value supply voltage (v s ) 5.5 v input voltage range (any input) v cc +0.5 to v ee -0.5 v dc input current (any one input) 10 ma power dissipation 500 mw operating temperature range 0 c t a 70 c storage temperature range -65 c t s 150 c lead temperature (soldering, 10 sec) 260 c absolute maximum ratings pin descriptions pin no. symbol i/o description supply voltage v s operating range 4.75 5.0 5.25 v power consumption p d - 285 360 mw with monitor active - 330 415 mw supply current i s -5272ma with monitor active - 60 83 ma serial data output - high v oh min t a = 25c -1.025 - -0.88 v with respect to v cc - low v ol max t a = 25c -1.8 - -1.6 v with respect to v cc output signal swing v o t a = 25c 700 800 900 mv input resistance (in+, in-) r in 4k 5k - ? see fig. 5 input capacitance (in+, in-) c in t a = 25c - 1.3 - pf see fig. 5 output 'eye' monitor v oem r l = 50 ? , to v cc - 40 - mv p-p signal strength output v ss 4.4 - 5 v gs9004c gain a v t a = 25c 30 33 - db ?=135 mhz jitter (added) t j t a = 25c, 300m of 8281 - 600 - ps p-p test setup 1 270mb/s cable. parameter symbol conditions min typ max units notes gs9004d ac electrical characteristics conditions: v s = 5 v, t a = 0 o to 70 o c, r l = 100 ? , to (v cc -2) volts, unless otherwise shown (i = input, o = output, s = supply function) data data gnd 1 (v ee 1 ) gnd (v ee ) gnd (v ee ) in ? in+ 14 9 8 10 12 13 11 1 4 3 6 5 7 2 v cc (gnd) v cc (gnd) oem v cc (gnd) nc ssi agc gs9004d pin connections gs9004d dc electrical characteristics conditions: v s = 5 v, t a = 0 o to 70 o c, r l = 100 ? , to (v cc -2) volts, unless otherwise shown. parameter symbol conditions min typ max units notes
3 of 4 32486 -0 not recommended for new designs this output is integrated by an external agc filter capacitor (agc cap pin 7), providing a steady control volt age for the voltage variable filter. a separate signal strength indicator output, (ssi pin 6), proportional to the amount of agc, is also provided. as the filter characteristic is varied automatically by the application of negative feedback, the amplitude of the equalized signal is kept at a constant level which is representative of the original amplitude at the transmitter. the equalized signal is then dc restored, effectively restoring the logic threshold of the equalized signal to its correct level irrespective of shifts due to ac coupling. as the final stage of signal conditioning, a comparator converts the analog output of the dc restorer to a regenerated digital output signal having pseudo-ecl voltage levels. these outputs, data and data, are available from pins 13 and 14 respectively. an output 'eye' monitor (pin 3) allows verification of signal integrity after equalization, prior to reslicing. gs9004d cable equalizer - detailed device description the gs9004d cable equalizer is a bipolar integrated circuit used to equalize smpte 259m signals from a co-axial cable. the device is implemented as a fourteen pin soic, powered from a single five volt supply. with an operating frequency up to 400 mb/s, the equalizer consumes about 285 mw of power. the serial digital signal is connected to the input (pins 8, 9) either differentially or single ended with the unused input being decoupled. the equalized signal is generated by passing the cable signal through a voltage variable filter having a characteristic which closely matches the inverse cable loss characteristic. additionally, the variation of the filter characteristic with control voltage is designed to imitate the variation of the inverse cable loss characteristic as the cable length is varied. the amplitude of the equalized signal is monitored by a peak detector circuit which produces an output current with a polarity corresponding to the difference between the desired peak signal level and the actual peak signal level. fig. 2 test set-up 1 all resistors in ohms, all capacitors in microfarads, all inductors in henries unless otherwise stated. data clock d.u.t. cable driver cable driver oscilloscope vertical in trigger in 8281 cable anritsu me522a or tektronix tsg422 fig. 1 test circuit 18n 75 4 3 2 1 5 6 7 8 150 1.0 68 1.8p 1.8p 1.0 100 113 100 680 680 68 150 1.8p 1.0 68 150 v cc v cc v cc v cc v cc v cc v cc 1.0 68 1.8p 150 sdo4 sdo3 sdo2 sdo1 gs9007 50 1 2 3 4 5 6 7 14 13 12 11 10 9 8 sdi oem 47p 47p 75 gs9004d oem ssi 100n 100n 100n 100n 100n 10 + 100n 10 + 100n v cc v cc oem v cc n/c ssi agc data data gnd1 gnd gnd in - in+ gnd +5v so2 so2 so1 so1 gnd si si vcc
4 of 4 not recommended for new designs 32486 -0 0 5 0 5 0 80 75 70 65 60 0 10 20 30 40 50 60 70 fig. 3 supply current vs temperature temperature typical performance curves (unless otherwise shown v s = 5v, t a = 25c) v s = 5.25 v 0 10 20 30 40 50 60 70 temperature (c) fig. 4 data and data output voltage vs temperature 900 850 800 750 700 650 600 v s = 4.75 v v s = 5.0 v v s = 4.75 v v s = 5.0 v v s = 5.25 v current (ma) serial output (mv) all resistors in ohms, all capacitors in microfarads unless otherwise stated. fig. 5 typical application circuit gennum corporation assumes no responsibility for the use of any circuits described herein and makes no representations that the y are free from patent infringement. ? copyright july 2004 gennum corporation. all rights reserved. printed in canada. 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. revision notes: new document. for latest product information, visit www.gennum.com gennum corporation mailing address: p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax +1 (905) 632-2814 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 747000 fax: +44 (0) 1252 726523 caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation l1 18n r9 75 4 3 2 1 5 6 7 8 r13 150 c13 1.0 r8 68 c18 1.8p c16 1.8p r15 1.0 r7 100 r10 100 r11 680 r12 680 c14 100n r14 68 r6 150 c11 1.8p c10 1.0 r5 68 r3 150 v cc v cc v cc v cc v cc v cc v cc c6 1.0 r2 68 c8 1.8p r15 150 j3 sdo4 j4 sdo4 j5 sdo4 j6 sdo4 gs9007 c3 100n r1 50 1 2 3 4 5 6 7 14 13 12 11 10 9 8 j1 sdi j2 oem c15 47p c12 47p gs9004d jp1 oem 113 tp1 ssi c4 100n c2 100n 10 + c7 100n c5 10 + 100n v cc v cc oem v cc n/c ssi agc data data gnd1 gnd gnd in - in+ gnd +5v so2 so2 so1 so1 gnd si si vcc 75
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