- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384359 > GS9004DCKB (Gennum Corporation) GENLINX-TM GS9004D Serial Digital Cable Equalizer PDF資料下載
參數(shù)資料
| 型號(hào)： | GS9004DCKB |
| 廠商： | Gennum Corporation |
| 英文描述： | GENLINX-TM GS9004D Serial Digital Cable Equalizer |
| 中文描述： | GENLINX -商標(biāo)GS9004D串行數(shù)字電纜均衡器 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大小： | 68K |
| 代理商： | GS9004DCKB |
3 of 4
32486 -0
NOTRECOMMENDED
FORNEWDESGNS
Fig. 1 Test Circuit
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
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
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
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
47p
SDI
OEM
47p
75
GS9004D
OEM
SSI
100n
100n
100n
100n
100n
10μ
+
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
GND
SI
SI
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GS9004DCKBE3 | GENLINX-TM GS9004D Serial Digital Cable Equalizer |
| GS9004DCTB | GENLINX-TM GS9004D Serial Digital Cable Equalizer |
| GS9005BCPJ | GENLINX-TM GS9005B Serial Digital Receiver |
| GS9005BCPJE3 | GENLINX-TM GS9005B Serial Digital Receiver |
| GS9005BCTJ | GENLINX-TM GS9005B Serial Digital Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS9004DCKBE3 | 制造商:Semtech Corporation 功能描述:Equalizer |
| GS9004DCTB | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:GENLINX-TM GS9004D Serial Digital Cable Equalizer |
| GS9004DCTBE3 | 制造商:Semtech Corporation 功能描述:TAPE & REEL Cable Driver |
| GS9005 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| GS9005A | 制造商: 功能描述: 制造商:STME 功能描述: 制造商:undefined 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。