GENLINX ™ GS9004D Serial Digital Cable Equalizer DATA SHEET FEATURES DEVICE DESCRIPTION • automatic cable equalization The Gennum GS9004D is an improved monolithic automatic cable equalizer developed for SMPTE/EBU scrambled NRZI Serial Di g i t a l Video signals. • typically greater than 300 m of high quality cable at 270 Mb/s 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. • typically 300 m of high quality cable at 360 Mb/s • drop in replacement for GS9004C D E D S N E GN M SI M E O D C E R EW T N O N OR F • capability to drive 50 W loads (to VTT) • fully compatible with SMPTE 259M and operational to 400 Mb/s • signal strength indicator • output 'eye' monitor • 14 pin SOIC packaging 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 (pp) equalized signals into 50 Ω loads (to VTT). These signals can be used to feed cable driver circuits for Serial Distribution Amplifier applications. • single +5 or -5 volt power supply operation This device also incorporates an analog signal strength indicator (SSI) which provides a 0.5 V to 0 V output relative to VCC, indicating the amount of equalization being applied to the signal. • Pb-free and Green APPLICATIONS • Front-end cable equalization for digital video systems • Input equalization for serial digital distribution amplifiers, routers, production switchers and other receiving equipment ORDERING INFORMATION Part Number GS9004DCKB GS9004DCTB GS9004DCKBE3 Package Type 14 pin SOIC 14 pin SOIC Tape 14 pin SOIC Temperature Range o 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. Pb-Free and Green o 0 C to 70 C 0oC to 70oC 0oC to 70oC No No Yes GS9004D 6 SIGNAL STRENGTH INDICATOR FILTER CONTROL AGC 7 CAPACITOR PEAK DETECTOR VOLTAGE VARIABLE FILTER LOGIC COMPARATOR IN+ IN- 8 9 Σ DC RESTORER 14 13 DATA DATA 3 OUTPUT 'EYE' MONITOR Revision Date: July 2004 FUNCTIONAL BLOCK DIAGRAM 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: [email protected] ABSOLUTE MAXIMUM RATINGS PARAMETER GS9004D PIN CONNECTIONS VALUE Supply Voltage (VS) 5.5 V Input Voltage Range (any input) VCC+0.5 to VEE -0.5 V VCC (GND) 1 14 DATA 10 mA VCC (GND) 2 13 DATA DC Input Current (any one input) Power Dissipation Operating Temperature Range Storage Temperature Range 500 mW OEM 3 12 GND 1 (VEE1) 0°C ≤ TA ≤ 70°C VCC (GND) 4 11 GND (VEE) -65°C ≤ TS ≤ 150°C NC 5 10 GND (VEE) SSI 6 9 IN – 7 8 IN+ 260°C Lead Temperature (soldering, 10 sec) AGC PIN DESCRIPTIONS (I = INPUT, O = OUTPUT, S = SUPPLY function) D E D S N E GN M SI M E O D C E R EW T N O N OR F PIN NO. SYMBOL I/O 1 VCC (GND) S Most positive supply voltage (ECL outputs) VCC(GND) S Most positive supply voltage (DC Restore/Eye Monitor) OEM O Output 'Eye' Monitor VCC(GND) S 2 3 4 5 6 7 8 9 10 11 12 13 14 DESCRIPTION Most positive supply voltage (Equalizer) NC No Connection SSI O Signal Strength Indicator AGC I AGC capacitor connection IN+ I Non-inverting signal IN- I Inverting signal GND(VEE) S Most negative supply voltage GND(VEE) S Most negative supply voltage GND1(VEE1) S Most negative supply voltage for EYE MONITOR DATA O DATA (true) DATA O DATA (inverse) GS9004D DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Supply Voltage VS Power Consumption PD Supply Current IS Conditions: VS = 5 V, TA = 0o to 70oC, RL = 100 Ω, to (VCC -2) volts, unless otherwise shown. CONDITIONS MIN Operating Range With MONITOR active With MONITOR active Serial Data Output - High - Low V OH MAX UNITS 4.75 5.0 5.25 V - 285 360 mW mW - 330 415 - 52 72 mA - 60 83 mA NOTES MIN TA = 25°C -1.025 - -0.88 V with respect to VCC V OL MAX TA = 25°C -1.8 - -1.6 V with respect to VCC GS9004D AC ELECTRICAL CHARACTERISTICS PARAMETER TYP SYMBOL Output Signal Swing VO Input Resistance(IN+, IN-) R IN Input Capacitance(IN+, IN-) CIN Output 'Eye' Monitor V OEM Signal Strength Output V SS GS9004C GAIN AV JITTER (Added) 270Mb/s tJ Conditions: VS = 5 V, TA = 0o to 70oC, RL = 100 Ω, to (VCC -2) volts, unless otherwise shown CONDITIONS MIN TA = 25°C TYP MAX UNITS NOTES 700 800 900 4k 5k - Ω see fig. 5 TA = 25°C - 1.3 - pF see fig. 5 RL = 50Ω, To VCC - 40 - mV p-p 4.4 - 5 V 30 33 - dB - 600 - ps p-p TA = 25°C mV ƒ=135 MHz TA = 25°C, 300m of 8281 cable. 2 of 4 Test setup 1 32486 -0 GS9004D CABLE EQUALIZER - DETAILED DEVICE DESCRIPTION This output is integrated by an external AGC filter capacitor (AGC CAP pin 7), providing a steady control voltage for the voltage variable filter. 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. 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 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 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. D E D S N E GN M SI M E O D C E R EW T N O N OR F 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. 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. An OUTPUT 'EYE' MONITOR (pin 3) allows verification of signal integrity after equalization, prior to reslicing. 68 VCC +5V 10µ SDO4 + 1.0 1.8p 150 GND 68 SDO3 1.0 100 5 6 7 100 100n 100n 100n 1 VCC VCC 50 VCC 2 100n 3 VCC 4 100n 5 100n 100n OEM + VCC 6 7 VCC DATA VCC DATA OEM GND1 VCC GND N/C GND SSI IN - AGC IN+ 10 GS9004D SSI 680 14 8 GND SO2 4 SI SO2 3 SI SO1 2 VCC SO1 1 VCC GS9007 1.8p 150 68 SDO2 1.0 1.8p 150 13 68 680 12 OEM SDO1 11 1.0 10 1.8p 150 113 9 8 47p All resistors in ohms, all capacitors in microfarads, 47p all inductors in henries unless otherwise stated. 75 75 18n SDI Fig. 1 Test Circuit 8281 CABLE ANRITSU ME522A OR TEKTRONIX TSG422 CABLE DRIVER DATA D.U.T. CABLE DRIVER VERTICAL IN CLOCK OSCILLOSCOPE TRIGGER IN Fig. 2 Test Set-up 1 3 of 4 32486 -0 TYPICAL PERFORMANCE CURVES (unless otherwise shown VS = 5V, TA = 25°C) 800 900 VS = 5.25 V 700 VS = 5.0 V 655 850 SERIAL OUTPUT (mV) CURRENT (mA) 755 VS = 5.25 V 800 VS = 5.0 V 750 VS = 4.75 V 700 D E D S N E GN M SI M E O D C E R EW T N O N OR F VS = 4.75 V 600 0 10 20 30 650 40 50 60 600 70 0 10 20 30 40 50 60 70 TEMPERATURE (°C) TEMPERATURE Fig. 4 Data and Data Output Voltage vs Temperature Fig. 3 Supply Current vs Temperature R2 68 VCC +5V J3 SDO4 + 10µ C6 1.0 R3 150 GND C8 1.8p R5 68 J4 SDO4 100n GS9004D C3 100n VCC VCC 1 VCC 2 C4 100n R1 50 3 4 VCC 5 J2 OEM C2 100n VCC TP1 SSI C7 100n + 6 7 C5 10µ VCC DATA VCC DATA OEM GND1 VCC GND N/C GND SSI IN - AGC IN+ 5 R7 100 14 6 7 13 11 R11 680 10 8 R10 100 JP1 OEM 12 R12 680 GND SO2 4 SI SO2 3 SI SO1 2 VCC SO1 1 VCC GS9007 C10 1.0 R6 150 R8 68 C13 1.0 R13 150 113 9 C11 1.8p J5 SDO4 C16 1.8p R14 68 8 C14 100n C15 47p C12 47p R15 1.0 R15 150 J6 SDO4 C18 1.8p 75 J1 SDI R9 75 L1 18n Fig. 5 Typical Application Circuit All resistors in ohms, all capacitors in microfarads unless otherwise stated. CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION DOCUMENT IDENTIFICATION: DATA SHEET REVISION NOTES: 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. New document. For latest product information, visit www.gennum.com GENNUM CORPORATION GENNUM JAPAN CORPORATION MAILING ADDRESS: P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 Fax +1 (905) 632-2814 Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, SHIPPING ADDRESS: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5 25 Long Garden Walk Farnham, Surrey, England GU9 7HX Tokyo 160-0023 Japan Tel: +81 (03) 3349-5501 Fax: +81 (03) 3349-5505 GENNUM UK LIMITED Tel: +44 (0) 1252 747000 Fax: +44 (0) 1252 726523 Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. © Copyright July 2004 Gennum Corporation. All rights reserved. 4 of 4 Printed in Canada. 32486 -0