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參數(shù)資料
| 型號： | GS9028 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Cable Driver with Two Adjustable Outputs |
| 中文描述： | 電纜驅(qū)動器，帶有雙可調(diào)輸出 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大小： | 106K |
| 代理商： | GS9028 |
521 - 68 - 04
5
G
DETAILED DESCRIPTION
INPUT INTERFACING
SDI/SDI are high impedance differential inputs. Two
conditions must be observed when interfacing to these
inputs:
1. The input signal amplitude must be between 80mV and
1000mV.
2. The common mode voltage range must be as specified
in the DC Characteristics Table (page 2). For 800mV
input amplitude signals, this corresponds to a common
mode voltage range between 2.8 and 4.6 volts.
Figures 6 and 7 illustrate two methods of interfacing the
GS9028 to the Gennum GS9024 (Cable Equalizer), GS9035
(Reclocker) or the GS9025 (Receiver).
Figure 6 illustrates the simplest interface and is
recommended when the trace lengths between the driver
and the GS9028 are less than 0.5in. The pull up resistors
should be placed near the GS9028 to serve as end
terminations.
Fig. 6
When trace lengths become longer than 0.5in and data
rates greater than 360Mb/s, electromagnetic reflections
begin to affect signal integrity. To minimize reflections,
controlled impedance traces and source and end
terminations should be used as shown in Figure 7. Although
terminations on both sides reduce the signal swing by a
factor of two, the GS9028 is designed to meet this need
with ultra low input amplitude requirements (as low as
80mV). This low input amplitude requirement also allows the
use of 50
transmission lines (which are more robust and
easier to control in multilayer boards) to interconnect the
GS9024/25/35 and the GS9028.
Fig. 7
The GS9028 can also be configured to accept ac coupled
input signals. In this case, the inputs must be dc biased as
illustrated in Figure 8.
Fig. 8
The recommended values for R1 and R2 are:
R1 = 1.35Z
O
R2 = 3.85Z
O
where Z
O
is the transmission line characteristic impedance.
For 75
cable, R1 = 100
and R2 = 287
.
OUTPUT INTERFACING
Figure 9 illustrates the recommended interface for ac
coupled outputs.
Fig. 9
GS9024 or
GS9035 or
GS9025
GS9028
75
75
10nF
V
CC
+
_
+
_
GS9024 or
GS9035 or
GS9025
GS9028
+
_
+
_
V
CC
75
100nF
10nF
75
75
75
R1
R1
10nF
1μF
1μF
R2
R2
V
CC
GS9028
+
_
R
T
GS9028
_
R
R
T
= R = Z
O
GS9028
R
L
L
R
T
V
CC
+
10nF
1μF
1μF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GS9028-CKA | Cable Driver with Two Adjustable Outputs |
| GS9028-CTA | Cable Driver with Two Adjustable Outputs |
| GS9029 | GENLINX ⑩ GS9029 Quad Output Serial Digital Video Cable Driver |
| GS9029-CKD | GENLINX ⑩ GS9029 Quad Output Serial Digital Video Cable Driver |
| GS9029-CTD | GENLINX ⑩ GS9029 Quad Output Serial Digital Video Cable Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GS9028_04 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Cable Driver with Two Adjustable Outputs |
| GS9028CKA | 制造商:Gennum Corporation 功能描述: |
| GS9028-CKA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
| GS9028-CKAE3 | 制造商:Semtech Corporation 功能描述:Cable Driver - 2 Adjustable Outputs, SMPTE 259M compliant, 8 pin SOIC 制造商:Gennum Corporation 功能描述:Cable Driver 8-Pin SOIC |
| GS9028-CTA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
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