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參數(shù)資料
| 型號(hào)： | GS9078A |
| 廠商： | Gennum Corporation |
| 英文描述： | GS9078A HD-LINX-R II Multi-Rate Cable Driver |
| 中文描述： | GS9078A的HD - LINX進(jìn)程- R的第二多速率電纜驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 244K |
| 代理商： | GS9078A |
GS9078A Data Sheet
34165 - 4
March 2006
8 of 14
4. Detailed Description
4.1 Input Interfacing
S
DI/SDI are high impedance differential inputs. The equivalent input circuit is shown
in
Figure 3-1
.
Several conditions must be observed when interfacing to these inputs:
The differential input signal amplitude must be between 300 and 2000mVpp.
The common mode voltage range must be as specified in the
DC Electrical
Characteristics on page 5
.
For input trace lengths longer than approximately 1cm, the inputs should be
terminated as shown in the Typical Application Circuit.
The GS9078A inputs are self-biased, allowing for simple AC coupling to the device.
For serial digital video, a minimum capacitor value of 4.7μF should be used to allow
coupling of pathological test signals. A tantalum capacitor is recommended.
4.2 Output Interfacing
The GS9078A outputs are current mode, and will drive 800mV into a 75
Ω
load.
These outputs are protected from accidental static damage with internal static
protection diodes.
The SMPTE 344M and SMPTE 259M standards require that the output of a cable
driver have a source impedance of 75
Ω
and a return loss of at least 15dB between
5MHz and 540MHz.
In order for an SDI output circuit using the GS9078A to meet this specification, the
output application circuit shown in
Typical Application Circuit on page 11
is
recommended.
The value of L
COMP
will vary depending on the PCB layout, with a typical value of
5.6nH
. A 4.7μF capacitor is used for AC coupling the output of the device. This
value is chosen to ensure that pathological signals can be coupled without a
significant DC component occurring. Please see
Application Information on
page 11
for more details.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GS9078ACNE3 | GS9078A HD-LINX-R II Multi-Rate Cable Driver |
| GS9090A | GS9090A GenLINX-R III 270Mb/s Deserializer for SDI |
| GS9090ACNE3 | GS9090A GenLINX-R III 270Mb/s Deserializer for SDI |
| GS9090 | GS9090 GenLINX-R III 270Mb/s Deserializer for SDI and DVB-ASI |
| GS9090-CNE3 | GS9090 GenLINX-R III 270Mb/s Deserializer for SDI and DVB-ASI |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS9078ACNE3 | 制造商:Gennum 功能描述: 制造商:Gennum Corporation 功能描述: 制造商:Semtech Corporation 功能描述:Multi Rate Cable Driver 16-Pin QFN EP 制造商:Semtech Corporation 功能描述:SD/ASI Cable Driver (to 540Mb/s) |
| GS9078ACTE3 | 制造商:Semtech Corporation 功能描述:SD/ASI Cable Driver (to 540Mb/s) |
| GS9090 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:GS9090 GenLINX-R III 270Mb/s Deserializer for SDI and DVB-ASI |
| GS9090A | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:GS9090A GenLINX-R III 270Mb/s Deserializer for SDI |
| GS9090A_10 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:GenLINX III 270Mb/s Deserializer |
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