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参数资料
| 型号： | MAX11507CEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/10页 |
| 文件大小： | 0K |
| 描述： | IC FILTER VIDEO HD/SD 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 视频滤波器 |
| 应用： | 录音机，机顶盒 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
MAX11506/MAX11507
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
8
_______________________________________________________________________________________
AC-Coupled Inputs
When the input is AC-coupled, the transparent clamps
are active and set the lowest point of the signal at ground.
This is appropriate for unipolar signals such as CVBS, Y,
R, G, or B, with or without sync pulses (Figure 3).
For bipolar signals such as Pb and Pr, bias the AC-cou-
pled inputs to a fixed DC voltage, typically 0.59V, to
ensure that the transparent clamp remains off. Figure 4
shows a typical network. Determine the bias voltage using:
where IL is the input leakage current (typically 0.5A).
SD Filters
The MAX11506/MAX11507 filters are optimized to deliv-
er a flat (MAX11506) or high-frequency boosted
(MAX11507) passband and high stopband attenuation.
The filter characteristic provides excellent time domain
response with low overshoot. The typical -3dB frequen-
cy of 9.0MHz guarantee minimal attenuation in the
passband, while at the same time offering a 27MHz
attenuation of typically -48dB.
HD Filters
The internal filters deliver a flat passband along with high
stopband attenuation. The filter characteristic provides
an excellent time domain response with low overshoot.
The typical -3dB frequency of 33MHz guarantees low
attenuation in the passband, while at the same time
allowing for a typical attenuation of -46dB at 74.25MHz.
Output Buffers
The MAX11506/MAX11507 feature output buffers with
+6dB gain that drive a standard 150 video load. A
typical load consists of a 75 backmatch resistor, an
optional 220F or larger coupling capacitor, and a 75
termination resistor. The offset between input and out-
put signals ensures that the blanking level on the output
is less than 1V after the backmatch resistor, thus meet-
ing digital TV specifications allowing the devices to
drive video loads directly without using costly AC-coupling
capacitors.
Applications Information
Output Considerations
The MAX11506/MAX11507 outputs may be DC- or AC-
coupled. These devices, with +6dB gain, are typically
connected to a 75 series backmatch resistor followed
by the video cable. Choose an AC-coupling capacitor
value that ensures that the lowest frequency content in
the video signal is passed and the field-time distortion
is kept within desired limits when using an AC connec-
tion. The selection of this value is a function of the input
impedance, and more importantly, the input leakage of
the circuit being driven. Common industry practice is to
use a 220F or larger capacitor.
V
R
RR
xV
I x R
BAVCC
L
()
=
+
()
2
12
1
INPUT
MAX11506
MAX11507
0.1F
ENCODER
DAC
Figure 3. Simple AC-Coupling for Unipolar Signals (CVBS, Y, R,
G, B)
INPUT
R1
820k
R2
120k
MAX11506
MAX11507
0.1F
ENCODER
DAC
VCC
Figure 4. AC-Coupling for Bipolar Signals (C, Pb, Pr)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11508 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost, 3-Channel, HD/PS/SD/BP Video Filters with Buffer |
| MAX11508EVKIT+ | 功能描述:视频 IC 开发工具 3Ch HD/PS/SD/BP Video Filters & Buff RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| MAX11508UUD+ | 功能描述:视频 IC 3Ch HD/PS/SD/BP Video Filters & Buff RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX11508UUD+T | 功能描述:视频 IC 3Ch HD/PS/SD/BP Video Filters & Buff RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX11509 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost, 3-Channel, HD/PS/SD/BP Video Filters with Buffer |
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