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參數(shù)資料
| 型號(hào)： | MAX11505 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Four-Channel, Standard-Definition Video Filter |
| 中文描述： | 四通道、標(biāo)清視頻濾波器 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 247K |
| 代理商： | MAX11505 |
M
Four-Channel, Standard-Definition
Video Filter
_______________________________________________________________________________________
7
For bipolar signals such as C, P
b
, and P
r
, bias the AC-
coupled inputs to a fixed DC voltage, typically 0.59V, to
ensure that the transparent clamp remains off. A suit-
able network is shown in Figure 4. Determine the bias
voltage using:
where I
L
= the input leakage current (typically 0.5μA).
Standard-Definition Filters
The MAX11504/MAX11505 filters are optimized to deliv-
er a flat passband along with high stop-band attenua-
tion. The filter characteristic has been chosen to provide
an excellent time domain response with low overshoot.
The typical -3dB frequency of 8.6MHz guarantees mini-
mal attenuation in the passband while at the same time
offering a 27MHz attenuation of typically -50dB.
Channel 1 of the MAX11505 has 0.8dB of high-frequency
boost and a -3dB frequency of 8.9MHz.
Output Buffer
The MAX11504/MAX11505 feature output buffers with
+6dB gain that drive two standard 150
video loads.
A typical load (Figure 5a) is a 75
back-match
resistor, an optional 220μF or larger coupling
capacitor, and a 75
termination resistor. The
MAX11504/MAX11505 clamp the signal, forcing the
blanking level to less than 1V at the termination resis-
tor. This allows driving video loads to meet digital TV
specifications without the need for costly AC-coupling
capacitors. When driving two parallel loads per output
(Figure 5b), thermal considerations must be taken into
account, especially for DC-coupled outputs (see the
Junction Temperature Calculations section.)
V
R
+
1
R
R
V
I
R
B
CC
L
=
×
2
2
1
(
)
IN_
R2
120k
R1
820k
0.1
μ
F
DAC
ENCODER
MAX11504
MAX11505
V
CC
Figure 4. AC-Coupling for Bipolar Signals (C, Pb, Pr)
(a)
(b)
OUT_
75
220
μ
F
(OPTIONAL)
75
MAX11504
MAX11505
OUT_
MAX11504
MAX11505
75
220
μ
F
(OPTIONAL)
75
75
220
μ
F
(OPTIONAL)
75
Figure 5. Typical Output Loads
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX11505CUB+ | 功能描述:視頻 IC 4Ch Standard-Def Video Filter RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| MAX11505CUB+T | 功能描述:視頻 IC 4Ch Standard-Def Video Filter RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| MAX11506 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Low-Cost, 6-Channel SD Plus HD/SD Selectable Video Filters and Buffers |
| MAX11506CEE | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Low-Cost, 6-Channel SD Plus HD/SD Selectable Video Filters and Buffers |
| MAX11506CEE+ | 功能描述:視頻 IC 6Ch SD+HD/SD Select Video Filters & Buff RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
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