AD722屬于集成電路（IC）的數(shù)模轉換器（DAC）。由亞德諾半導體技術有限公司制造生產(chǎn)的AD722數(shù)模轉換器（DAC）數(shù)模轉換器（DAC、D/A、D2A 或 D 轉 A）可將數(shù)字信號轉換為緩沖或無緩沖的模擬電壓或電流。DAC 架構是否適合特定應用，要取決于分辨率和采樣頻率。DAC 通常用于音樂播放器，將數(shù)字數(shù)據(jù)流轉換為模擬音頻流。它們還用于電視和手機，將數(shù)字視頻數(shù)據(jù)轉換為模擬視頻信號，再連接到屏幕驅動器，以顯示單色或彩色圖像。

PRODUCT DESCRIPTION

The AD722 is a low cost RGB to NTSC/PAL Encoder that converts red, green and blue color component signals into their corresponding luminance (baseband amplitude) and chromi nance (subcarrier amplitude and phase) signals in accordance with either NTSC or PAL standards. These two outputs are also combined to provide composite video output. All three outputs can simultaneously drive 75 ?, reverse-terminated cables. All logical inputs are CMOS compatible. The chip operates from a single +5 V supply. No external delay lines or filters are required. The AD722 may be powered down when not in use.

FEATURES

Low Cost, Integrated Solution

+5 V Operation

Accepts FSC Clock or Crystal, or 4FSC Clock

Composite Video and Separate Y/C (S-Video) Outputs

Minimal External Components:

No External Filters or Delay Lines Required

Onboard DC Restoration

Accepts Either HSYNC & VSYNC or CSYNC

Phase Lock to External Subcarrier

Drives 75 ? Reverse-Terminated Loads

Logic Selectable NTSC or PAL Encoding Modes

Compact 16-Pin SOIC

APPLICATIONS

RGB to NTSC or PAL Encoding