DMX512A-W 串行芯片

DMX512A-W串聯DMX解碼驅動芯片 

產品簡介（DMX512A-W）

     DMX512A-W是單線傳輸三通LED驅動控制專用芯片,采用DMX512(1990)通信協議。芯片內含電源穩壓電路,信號解碼模塊，數據緩存器,內置恒流電路,用戶通過調節REXT管腳外接電阻調整恒流輸出的PWM電流,也可通過外接電阻調節其他的電流值,輸出采用專利PWM 技術,以及內置振蕩器,支持輸出端極性反轉。

Description（DMX512A-W）:

DMX512AW is one chip with PWM, signal analysis and driving function, the data format follows the DMX512(1990) agreement. This chip is specially designed for LED lighting and decoration use. This chip is built in with clock circuit, decodemodule, buffer storage,3 channels constant flow driver (the electric current can be controlled by the resistance set outside) together with the Oscillator who make the PWM works.

產品特點（DMX512A-W）：

◆RGB輸出端口耐壓：25V

◆內置電源穩壓電路，外部電源范圍：5V～24V

◆DAI端口耐壓：5V

◆信號傳輸速率：250kbps

◆最大恒流輸出：60ma

◆專利PWM輸出,灰度等級：256級

◆單信號線級聯傳輸

◆具備信號修復功能，最大支持170/512個像素點的串接

◆兼容并擴展DMX512(1990)協議信號

◆封裝形式：SOP8

◆PDmax：0.25W

◆HBM ESD>4KV

Specialty（DMX512A-W）:

◆The max RGB output support voltage：25V

◆With built-in LDO, Supply voltage：5V～24V

◆DAI supply voltage：5V

◆One signal cable,signal transmission speed：250kbps

◆The max constant current support：60mA(19ma tacitly approve)

◆Regulable linearity PWM electric current output：256 scale

◆Signal cable Wiring：Single signal cable in series connection(TTL)

◆Max loading capacity: Max 170/512 chips in series connection.

◆Data Format: DMX512(1990) agreement

◆Package：SOP8

◆PDmax：0.25W

◆HBM ESD>4KV

產品用途（DMX512A-W）：

LED裝飾與照明/戶內/戶外LED顯視屏

Application（DMX512A-W）:

LED decoration and illumination

Indoor/outdoor LED display

產品速度對比（2013年8月）：

DMX512AP-N：250K-750K

DMX512AP：250K-450K

DMX512A-W：250K

DMX512A-PF：250-500K

DMX512A-W應用原理圖: