View GS9004D_414907.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

GENLINX TM 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 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-
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 0C TA 70C -65C TS 150C 260C VCC (GND) VCC (GND) OEM VCC (GND) NC SSI
1 2 3 4 5 6 7 14 13 12 11 10 9 8
GS9004D 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 , 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 = 25C TA = 25C
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 , to (VCC -2) volts, unless otherwise shown
CONDITIONS
MIN
TYP
MAX
UNITS mV 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 = 25C TA = 25C RL = 50, To VCC TA = 25C =135 MHz TA = 25C, 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 10 + 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 = 25C)
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
10
+
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 10
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. (c) Copyright July 2004 Gennum Corporation. All rights reserved.
Printed in Canada.
4 of 4
32486 -0

▲Up To Search▲

Price & Availability of GS9004D

	To Download GS9004D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .