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參數(shù)資料
| 型號： | MAX7448 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 4-Channel RGB Video Filter with Asynchronous CVBS Input |
| 中文描述： | 4通道RGB視頻濾波器，帶有異步CVBS輸入 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 211K |
| 代理商： | MAX7448 |
M
4-Channel RGB Video Filter with
Asynchronous CVBS Input
6
_______________________________________________________________________________________
Output Clamp Level
When a sync pulse is detected on channel A, the DC
restore loop is activated for channel A, B, and C.
Channel D
’
s DC restore loop is activated by the sync
pulse on channel D. The function of the loop is to set
the DC level of the video signal to the specified level of
the signal type (R, G, B, CVBS). See Table 1 for clamp
levels and sync sources.
Applications Information
Input Considerations
Use 0.1μF ceramic capacitors to AC-couple the inputs.
These input capacitors store a DC level so the outputs
are clamped to an appropriate DC voltage level.
Output Considerations
The outputs are typically connected to a 75
series
back-match resistor followed by the video cable.
Because of the inherent divide-by-two of this configura-
tion, the voltage on the video cable is always less than
1V, complying with industry-standard video require-
ments such as the European SCART standard (which
allows up to 2V of DC on the video cable). The video
buffer can also drive an AC-coupled video load. Good
video performance is achieved with an output capacitor
as low as 220μF.
Power-Supply Bypassing and Layout
The MAX7448 operates from a single +5V supply.
Bypass V
CC
to GND with a 0.1μF capacitor. Place all
external components as close to the device as possible.
Exposed Pads
The TSSOP-EP package has an exposed pad on the
bottom of the package. This pad is electrically connect-
ed to GND and should be connected to the ground
plane for improved thermal conductivity. Do not route
signals under this package.
14
13
12
11
10
9
8
1
2
3
4
5
6
7
OUTA
OUTB
OUTC
OUTD
IND
INC
INB
INA
TOP VIEW
MAX7448
V
CC
GND
GND
GND
GND
DISABLE
TSSOP
Pin Configuration
Chip Information
TRANSISTOR COUNT: 6300
PROCESS: BiCMOS
CHANNEL
CLAMP LEVEL
(V)
SYNC SOURCE
A
B
C
D
0.9
1.5
1.5
0.9
Channel A
Channel A
Channel A
Channel D
Table 1. Output Clamp Level and Sync
Source
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| MAX7448EUD | 4-Channel RGB Video Filter with Asynchronous CVBS Input |
| MAX7449 | 3-Channel Video Reconstruction Filter for RGB Component Video |
| MAX7449EUD | 3-Channel Video Reconstruction Filter for RGB Component Video |
| MAX7453 | Triple-Channel Video Reconstruction Filter and Buffer for Composite and Y/C Outputs |
| MAX7453CSA | Triple-Channel Video Reconstruction Filter and Buffer for Composite and Y/C Outputs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7448EUD | 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7448EUD+ | 功能描述:有源濾波器 Integrated Circuits (ICs) RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7448EUD+T | 功能描述:有源濾波器 Integrated Circuits (ICs) RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7448EUD-T | 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| MAX7449EUD | 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
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