GS9004D

GENLINX ™ GS9004D Serial Digital Cable Equalizer DATA SHEET 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 DEVICE DESCRIPTION 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. 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 (pp) equalized signals into 50 Ω loads (to VTT). These signals can be used to feed cable driver circuits for Serial Distribution Amplifier applications. • 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 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 D E DS NN EG M SI ME OD C EW RE TN OR NO F W loads (to VTT) Package Type Temperature Range 0 C to 70 C 0oC to 70oC 0oC to 70oC o o 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. 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 No No Yes 14 pin SOIC 14 pin SOIC Tape 14 pin SOIC GS9004D 6 SIGNAL STRENGTH INDICATOR FILTER CONTROL AGC 7 CAPACITOR PEAK DETECTOR VOLTAGE VARIABLE FILTER LOGIC COMPARATOR IN+ 8 9 14 13 IN- Σ DC RESTORER 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: info@gennum.com ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage (VS) Input Voltage Range (any input) DC Input Current (any one input) Power Dissipation Operating Temperature Range Storage Temperature Range Lead Temperature (soldering, 10 sec) VALUE 5.5 V VCC+0.5 to VEE -0.5 V 10 mA 500 mW 0°C ≤ TA ≤ 70°C -65°C ≤ TS ≤ 150°C 260°C VCC (GND) VCC (GND) OEM VCC (GND) NC SSI 1 2 3 4 5 6 7 14 13 12 11 10 9 8 G S9004D PIN CONNECTIONS DATA DATA GND 1 (VEE1) GND (VEE) GND (VEE) IN – IN+ PIN DESCRIPTIONS (I = INPUT, O = OUTPUT, S = SUPPLY function) PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SYMBOL I/O S DESCRIPTION AGC GS9004D DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Supply Voltage Power Consumption Supply Current Serial Data Output - High - Low GS9004D AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL D E DS NN EG M SI ME OD C EW RE TN OR NO F VCC (GND) VCC(GND) Most positive supply voltage (ECL outputs) S Most positive supply voltage (DC Restore/Eye Monitor) OEM O S Output 'Eye' Monitor VCC(GND) NC SSI Most positive supply voltage (Equalizer) No Connection O I Signal Strength Indicator AGC AGC capacitor connection IN+ INI Non-inverting signal Inverting signal I GND(VEE) GND(VEE) S S S Most negative supply voltage Most negative supply voltage GND1(VEE1) DATA Most negative supply voltage for EYE MONITOR O DATA (true) DATA O DATA (inverse) Conditions: VS = 5 V, TA = 0o to 70oC, RL = 100 Ω, to (VCC -2) volts, unless otherwise shown. CONDITIONS MIN TYP MAX UNITS V NOTES VS Operating Range 4.75 - 5.0 5.25 360 72 415 83 PD IS 285 52 - mW mA V With MONITOR active With MONITOR active TA = 25°C TA = 25°C 330 60 - mW mA V - V OH MIN -1.025 -1.8 -0.88 -1.6 with respect to VCC with respect to VCC V OL MAX Conditions: VS = 5 V, TA = 0o to 70oC, RL = 100 Ω, to (VCC -2) volts, unless otherwise shown CONDITIONS MIN TYP MAX UNITS mV Ω pF NOTES Output Signal Swing Input Resistance(IN+, IN-) Input Capacitance(IN+, IN-) Output 'Eye' Monitor Signal Strength Output GS9004C GAIN VO R IN CIN V OEM V SS AV tJ TA = 25°C TA = 25°C RL = 50Ω, To VCC TA = 25°C ƒ=135 MHz TA = 25°C, 300m of 8281 cable. 700 4k 4.4 30 800 5k 1.3 40 33 900 5 - see fig. 5 see fig. 5 mV p-p V dB JITTER (Added) 270Mb/s - 600 - ps p-p Test setup 1 2 of 4 32486 -0 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. This output is integrated by an external AGC filter capacitor (AGC CAP pin 7), providing a steady control voltage 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. 68 VCC VCC 50 OEM D E DS NN EG M SI ME OD C EW RE TN OR NO F +5V 10µ + 1.0 1.8p 150 GND 68 1.0 1.8p 100 5 6 7 8 GND SI SI SO2 4 SO2 3 150 68 SO1 2 SO1 1 100 100n SDO4 SDO3 VCC 100n SDO2 100n 1 2 3 4 5 6 7 VCC VCC VCC DATA DATA 14 13 12 11 10 9 8 680 VCC GS9007 1.0 1.8p 150 68 VCC 100n VCC OEM VCC N/C SSI GND1 GND GND IN - 680 OEM SDO1 100n 1.0 1.8p 100n 150 100n 113 + VCC AGC IN+ 10 47p 47p All resistors in ohms, all capacitors in microfarads, SSI GS9004D 75 all inductors in henries unless otherwise stated. 75 18n SDI Fig. 1 Test Circuit 8281 CABLE CABLE DRIVER DATA CABLE DRIVER ANRITSU ME522A OR TEKTRONIX TSG422 D.U.T. 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 SERIAL OUTPUT (mV) 850 755 VS = 5.25 V VS = 5.25 V 800 CURRENT (mA) 700 VS = 5.0 V 750 VS = 5.0 V VS = 4.75 V 700 655 600 0 VCC VCC DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION D E DS NN EG M SI ME OD C EW RE TN OR NO F VS = 4.75 V 650 10 20 30 40 50 60 70 600 0 10 20 30 40 50 60 70 TEMPERATURE TEMPERATURE (°C) Fig. 3 Supply Current vs Temperature Fig. 4 Data and Data Output Voltage vs Temperature R2 68 +5V VCC 10µ + GND R3 150 C6 1.0 C8 1.8p J3 SDO4 R5 68 100n GS9004D C3 100n 1 2 3 4 5 6 7 VCC VCC VCC DATA DATA 14 13 12 11 10 9 8 R7 100 5 6 7 8 GND SI SI SO2 4 SO2 3 R6 150 C10 1.0 C11 1.8p J4 SDO4 SO1 2 SO1 1 R8 68 C4 100n OEM VCC N/C SSI GND1 GND GND IN - JP1 OEM R1 50 R10 100 VCC VCC J2 OEM C2 100n C7 100n R11 680 R12 680 VCC GS9007 R13 150 C13 1.0 C16 1.8p J5 SDO4 113 R14 68 VCC + AGC IN+ TP1 SSI C5 10µ C12 47p C15 47p C14 100n R15 150 R15 1.0 C18 1.8p J6 SDO4 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 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. 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 REVISION NOTES: New document. For latest product information, visit www.gennum.com GENNUM JAPAN CORPORATION Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, Tokyo 160-0023 Japan GENNUM UK LIMITED 25 Long Garden Walk Farnham, Surrey, England GU9 7HX Tel: +44 (0) 1252 747000 Fax: +44 (0) 1252 726523 Tel: +81 (03) 3349-5501 Fax: +81 (03) 3349-5505 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. Printed in Canada. 4 of 4 32486 -0