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| 型号： | MAX11500EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | KIT EVALUATION FOR MAX11500 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 视频，视频滤波器 |
| 已用 IC / 零件： | MAX11500 |
| 已供物品： | 板 |
MAX11500
Three-Channel, High-Definition Video Filter
6
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Output Buffer
The MAX11500 features 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 termina-
tion resistor. The offset between input and output sig-
nals has been chosen such that the blanking level on
the output is less than 1V after the backmatch resistor,
thus meeting digital TV specifications. This allows the
MAX11500 to drive video loads directly without using
costly AC-coupling capacitors.
Applications Information
Output Considerations
The MAX11500 outputs can be DC- or AC-coupled.
The MAX11500, with +6dB gain, is typically connected
to a 75 series backmatch resistor followed by the
video cable. If an AC connection is used, choose an
AC-coupling capacitor value that ensures that the low-
est frequency content in the video signal is passed and
the field-time distortion is kept within desired limits. The
selection of this value is a function of the input imped-
ance and more importantly the input leakage of the cir-
cuit being driven. Common industry practice is to use a
220F or larger capacitor.
The outputs of the MAX11500 are fully protected
against a short circuit either to the ground or the posi-
tive supply of the device. The short-circuit protection
circuitry limits the output current to typically 75mA per
output. Shorting more than one output simultaneously
may exceed the maximum package power dissipation.
PCB Layout Recommendations
The device is thermally designed to operate with mini-
mum copper. However, to help with heat dissipation,
connect the power and ground traces to large copper
areas if possible. Bypass VCC to GND with a 0.1F
capacitor and an additional 1F capacitor in parallel for
additional low-frequency decoupling. Using surface-
mount capacitors reduces lead inductance and
ensures that the impedance of the capacitors is low
over a broad range of frequencies.
Place traces carrying video signals appropriately to
avoid mutual coupling. If AC-coupling the inputs, place
the input coupling capacitors as close as possible to
the device and keep traces short to minimize parasitic
capacitance and inductance. Doing so extends the
performance to the uppermost frequency range possi-
ble with the MAX11500.
For a recommended PCB layout, refer to the MAX11500
EV kit data sheet.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11500EVKIT+ | 功能描述:视频 IC 开发工具 MAX11500 Eval Kit 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 |
| MAX11500USA+ | 功能描述:视频 IC 3Ch High-Def Video Filter 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 |
| MAX11500USA+T | 功能描述:视频 IC 3Ch High-Def Video Filter 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 |
| MAX11501 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Three-Channel, Standard-Definition Video Filters |
| MAX11501EVKIT+ | 功能描述:视频 IC 开发工具 MAX11501 Eval Kit 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 |
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