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參數(shù)資料
| 型號(hào)： | MAX9516 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.8V, Ultra-Low-Power, DirectDrive Video Filter Amplifier with Load Detect |
| 中文描述： | 1.8V、超低功耗、DirectDrive視頻濾波放大器，提供負(fù)載檢測(cè) |
| 文件頁(yè)數(shù)： | 10/15頁(yè) |
| 文件大小： | 320K |
| 代理商： | MAX9516 |
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M
1.8V, Ultra-Low-Power, DirectDrive
Video Filter Amplifier with Load Detect
10
______________________________________________________________________________________
Anti-Alias Filter
The MAX9516 provides anti-alias filtering with buffering
before an analog-to-digital converter (ADC), which is
present in an NTSC/PAL video decoder, for example.
Figure 5 shows an example application circuit. An exter-
nal composite video signal is applied to VIDIN, which is
terminated with a total of 74
(56
and 18
resistors)
to ground. The signal is attenuated by four, and then
AC-coupled to IN. The normal 1V
P-P
video signal must
be attenuated because with a 1.8V supply, the
MAX9516 can handle only a video signal of approxi-
mately 0.25V
P-P
at IN. AC-couple the video signal to IN
because the DC level of an external video signal is usu-
ally not well specified, although it is reasonable to
expect that the signal is between -2V and +2V. The 10
series resistor increases the equivalent source resis-
tance to about 25
, which is the minimum necessary for
a video source to drive the internal sync-tip clamp.
For external video signals larger than 1V
P-P
, operate
the MAX9516 from a 2.5V supply so that IN can accom-
modate a 0.325V
P-P
video signal, which is equivalent to
a 1.3V
P-P
video signal at VIDIN.
37.5
0 TO 0.25V
LPF
DAC
IMAGE
PROCESSOR
ASIC
MAX9516
75
8V/V
Figure 4. Video DAC Generates a 0.25VP-PSignal Across a
37.5
Resistor Connected to Ground
MAX9516
LOAD SENSE
V
DD
VIDIN
VIDEO
AMPLIFIER
SHUTDOWN
CIRCUIT
SHDN
DC
LEVEL SHIFT
CLAMP
1.8V
V
DD
OUT
56
18
10
75
75
LOAD
VIDEO
DECODER
CHARGE PUMP
LINEAR
REGULATOR
C1
1
μ
F
C2
1
μ
F
0.1
μ
F
0.1
μ
F
LPF
GND
CPGND
C1P
C1N
V
SS
IN
Figure 5. MAX9516 Used as an Anti-Alias Filter with Buffer
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9516ALB+ | 制造商:Maxim Integrated Products 功能描述:1.8V, ULTRA-LOW-POWER, DIRECTDRIVE VIDEO FILTER AMPLIFIER - Bulk |
| MAX9516ALB+T | 功能描述:視頻放大器 1.8V DirectDrive Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類(lèi)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 |
| MAX9516EVKIT+ | 功能描述:放大器 IC 開(kāi)發(fā)工具 MAX9516 Eval Kit RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類(lèi)型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| MAX9517ATC+ | 功能描述:視頻放大器 Standard-Definition Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類(lèi)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 |
| MAX9517ATC+T | 功能描述:視頻放大器 Standard-Definition Video Filter Amp RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類(lèi)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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