GENNUM GS9004DCKB

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
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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