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參數(shù)資料
| 型號： | MAX9508AEE |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Video Filter Amplifier with SmartSleep and Bidirectional Video Support |
| 中文描述： | 視頻濾波放大器，具有SmartSleep的和雙向視頻支持 |
| 文件頁數(shù)： | 12/25頁 |
| 文件大小： | 414K |
| 代理商： | MAX9508AEE |
M
Active-Detect Mode
The active video-detect circuit slices the CVBSIN signal
at 4.7% of the power supply (155mV for a 3.3V supply).
If the transitions occur at a rate of 14kHz or higher, a
video signal is present. When the MAX9508 detects a
video signal with sync at the CVBSIN input, the control
logic enters the active-detect mode and enables the
load sense circuitry (Figure 3). The supply current is
typically 17μA.
If an output load is not connected to any amplifier, the
MAX9508 remains in active-detect mode. Eight times per
second, each load-sense circuit checks for a load by
connecting an internal 15k
pullup resistor to the output
for 1ms. If the output is pulled up, then no load is pre-
sent. If the output stays low, a load is connected.
Video Filter Amplifier with SmartSleep and
Bidirectional Video Support
12
______________________________________________________________________________________
CVBS 1
CIN
YIN
EXTCVBSIN
COUT
YOUT
CVBSOUT1
CVBSIN
CVBSOUT2
LPF
GND
+3.3V
V
DD
CLAMP
OFF
LOAD SENSE
6dB
75
75
LPF
BUFFER
LOAD SENSE
BUFFER
BUFFER
6dB
LOAD SENSE
6dB
75
LOAD SENSE
6dB
75
LPF
MAX9508
17
μ
A
SVIDEO
CHROMA
SVIDEO
LUMA
NO
LOADS
CURRENT
DAC
CURRENT
DAC
VIDEO SIGNAL
PRESENT
CURRENT
DAC
VIDEO ENCODER
SHDN
INT/EXT
ACTIVE VIDEO
DETECT
SMARTSLEEP
CONTROL
LOGIC
+3.3V
+3.3V
0
TO
50mV
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
CVBS 2
Figure 3. Active-Detect Mode with No Output Loads
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9508AEE+ | 功能描述:視頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX9508AEE+T | 功能描述:視頻放大器 Integrated Circuits (ICs) RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX9508ATE+ | 功能描述:視頻放大器 DirectDrive Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX9508ATE+T | 功能描述:視頻放大器 DirectDrive Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| MAX9508EVKIT | 功能描述:視頻放大器 Evaluation Kit for the MAX9508 RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
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