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| 型号： | ADV7177KSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 34/44页 |
| 文件大小： | 0K |
| 描述： | IC DAC VIDEO NTSC 3-CH 44MQFP |
| 产品变化通告： | ADV7xxx Obsolescence 16/Jan/2012 |
| 标准包装： | 96 |
| 类型： | 视频编码器 |
| 应用： | 机顶盒，电视 |
| 电压 - 电源，模拟： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
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ADV7177/ADV7178
Rev. C | Page 4 of 44
GENERAL DESCRIPTION
The ADV7177/AD7178 are integrated digital video encoders
that convert digital CCIR-601 4:2:2 8- or 16-component video
data into a standard analog baseband television signal
compatible with worldwide standards. The 4:2:2 YUV video
data is interpolated to 2× the pixel rate. The color-difference
components (UV) are quadrature modulated using a subcarrier
frequency generated by an on-chip, 32-bit digital synthesizer
(also running at 2× the pixel rate). The 2× pixel rate sampling
allows for better signal-to-noise ratio. A 32-bit DDS with a 9-bit
look-up table produces a superior subcarrier in terms of both
frequency and phase. In addition to the composite output
signal, there is the facility to output S-video (Y/C video), YUV
or RGB video.
Each analog output is capable of driving the full video-level
(34.7 mA) signal into an unbuffered, doubly terminated 75
load. With external buffering, the user has the additional option
to scale back the DAC output current to 5 mA min, thereby
significantly reducing the power dissipation of the device.
The ADV7177/ADV7178 also support both PAL and NTSC
square pixel operation.
The output video frames are synchronized with the incoming
data timing reference codes. Optionally, the encoder accepts
(and can generate) HSYNC, VSYNC, and FIELD timing signals.
These timing signals can be adjusted to change pulse width and
position while the parts are in master mode. The encoder
requires a single, 2× pixel rate (27 MHz) clock for standard
operation. Alternatively, the encoder requires a 24.5454 MHz
clock for NTSC or 29.5 MHz clock for PAL square pixel mode
operation. All internal timing is generated on-chip.
The ADV7177/ADV7178 modes are set up over a 2-wire serial
bidirectional port (I2C-compatible) with two slave addresses.
Functionally, the ADV7178 and the ADV7177 are the same
except that the ADV7178 can output the Macrovision anticopy
algorithm, and OSD is only supported on the ADV7177.
The ADV7177/ADV7178 are packaged in a 44-lead, thermally
enhanced MQFP package.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADV7177KSZ-REEL | 功能描述:IC DAC VIDEO NTSC 3-CH 44MQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 编码器，解码器，转换器 系列:- 产品变化通告:Development Systems Discontinuation 26/Apr/2011 标准包装:1 系列:- 类型:编码器 应用:DVB-S.2 系统 电压 - 电源，模拟:- 电压 - 电源，数字:- 安装类型:- 封装/外壳:模块 供应商设备封装:模块 包装:散装 其它名称:Q4645799 |
| ADV7178 | 制造商:AD 制造商全称:Analog Devices 功能描述:Integrated Digital CCIR-601 to PAL/NTSC Video Encoder |
| ADV7178KS | 制造商:Analog Devices 功能描述: |
| ADV7178KS-REEL | 制造商:Analog Devices 功能描述: |
| ADV7179 | 制造商:AD 制造商全称:Analog Devices 功能描述:Chip Scale PAL/NTSC Video Encoder with Advanced Power Management |
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