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參數(shù)資料
| 型號： | ML6426 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | High Bandwidth Triple Video Filters with Buffered Outputs(輸出緩沖的寬帶三路視頻濾波器) |
| 中文描述： | 高帶寬三路視頻濾波器與緩沖輸出（輸出緩沖的寬帶三路視頻濾波器） |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 287K |
| 代理商： | ML6426 |
ML6426
6
November, 1999
FUNCTIONAL DESCRIPTION
The ML6426 is a triple monolithic continuous time video
filter designed for reconstructing video signals from an
YUV/RGB video D/A source. The ML6426 is intended for
use in AC coupled input and output applications.
The filters approximate a 4th-order Butterworth
characteristic with an optimization toward low overshoot
and flat group delay. All outputs are capable of driving
2V
P-P
into AC coupled 150
W
video loads, with up to 35pF
of load capacitance. All outputs are capable of driving a
75
W
load at 1V
P-P
.
All channels are clamped during sync to establish the
appropriate output voltage swing range (DC restore). Thus
the input coupling capacitors do not behave according to
the conventional RC time constant. In most applications,
the ML6426's input coupling capacitors are only 0.1μF.
Figure 1. Typical Application Schematic
An external CMOS compatible H
SYNC
pulse is required
which is Active High on the SYNC IN Pin. See Figure 2.
During sync, the feedback clamp sources/sinks current to
restore the DC level. The net result is that the average
input current is zero. Any change in the input coupling
capacitors' value will linearly affect the clamp response
times.
Each channel is essentially tilt-free. Each input is
clamped by a feedback amp which responds to the output
during sync.
The ML6426 is robust and stable under all stated load and
input conditions. Bypassing both V
CC
pins directly to
ground ensures this performance.
RIN
5V
5V
R
G
0.1μF
220μF75
GIN
0.1μF
220μF75
B
220μF75
BIN
SYNC IN
0.1μF
RINA/YINA
2
RINB/YINB
BINA/VINA
8
BINB/VINB
9
A/
B
MUX
GINA/UINA
6
GINB/UINB
7
ROUT/YOUT
13
GOUT/UOUT
11
BOUT/VOUT
10
4th-ORDER
FILTER A
4th-ORDER
FILTER B
4th-ORDER
FILTER C
MUX
MUX
MUX
×
2
×
2
×
2
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
1
SYNCIN
16
GNDO
14
DISABLE
15
VCCO
12
VCC
4
GND
3
5
+
–
+
–
+
–
0.5V
0.5V
0.5V
ACTIVE HIGH
Figure 2. SYNC IN Pulse Width
VIL = 1.0V
50% x VSYNC IN
VIH = 2.5V
PWMIN = 2μS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ML-6426 | 制造商:CPI 制造商全稱:CPI 功能描述:AM broadcast and industrial heating applications |
| ML6426-1 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV |
| ML6426-15 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV |
| ML6426-2 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV |
| ML6426-3 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV |
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