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AD8842AR
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AD8842AR

  • Category:DAC digital-to-analog converter
  • Product Name:8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC
  • Manufacturers:ADI
  • Production Batch Number:15+
  • Encapsulation:24 ld SOP
  • Stock Status:There is stock
  • Stock Quantity:200
  • Minimum order quantity: 1
  • Details:点击查找AD8842AR的pdf资料
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  • Product introduction

Product details

AD8842内置8个通用型数字控制电压调节器件,TrimDAC®功能可以在新设计中取代机械式调整器功能。它非常适合对最高50 kHz带宽信号进行交流或直流增益控制。四象限乘法功能可以用于信号翻转和调制,这在视频垂直偏转电路中很常见。

AD8842内置8个电压输出数模转换器(DAC),各DAC均有单独的电压输入。全新的电流传输器放大器设计可执行四象限乘法功能,由电流输出处的一个单端放大器操控数模控制器。与TrimDAC电路以前所用的电压开关DAC相比,这种方法改进了恒定输入电阻性能,从而无需添加输入缓冲放大器。

每个DAC均有各自的DAC寄存器以保持其输出状态,这些DAC寄存器由一个内部串行至并行移位寄存器更新,该移位寄存器从一个标准三线式串行输入数字接口加载数据。由12个数据位构成的数据字同步传输至串行输入寄存器,该数据字经过解码,前4位可确定需要载入后8位数据的DAC寄存器地址。利用串行寄存器相对端的串行数据输出引脚,就可以简单的菊花链形式将多个DAC连接,而无需额外的外部解码逻辑。

采用±5 V电源供电时,AD8842的功耗仅为95 mW。关于5 V单电源应用,请参考DAC-8841。AD8842与1 MHz乘法带宽器件DAC8840引脚兼容。它提供24引脚塑封DIP和表贴SOL-24两种封装。

andAD8842ARRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
AD8842ARZ ADI 15+ 24 ld SOP 8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC
AD8842AR ADI 15+ 24 ld SOP 8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC

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