AD581是一款三引脚、温度补偿式单芯片带隙
Voltage reference，可以利用12 V至30 V的未调节输入电平提供精密的 10.00 V输出。该器件采用激光晶圆调整(LWT)技术来调整+25°C时的初始误差和温度系数，从而获得以前只有昂贵的混合产品或烘箱调节模块 才能提供的高精度性能。AD581L为单芯片基准电压源，初始误差5 mV，保证温度系数为5 ppm/°C。
The bandgap circuit design used in the AD581 offers several advantages over traditional Zener breakdown diode technology. The most important of these is the complete accuracy without the need for external devices and the significant increase in the stability of low-power systems. In addition, the device has a typical total supply current of 750 μA, which includes an output buffer amplifier that provides a maximum current of 10 mA. The long-term stability of this bandgap design is comparable to that of select Zener reference diodes.
The AD581 is recommended as a reference for 8-bit, 10-bit, or 12-bit digital-to-analog converters (DACs) that require an external precision reference source. The device is also ideal for all types of analog-to-digital converters (ADCs) with up to 14-bit accuracy, whether in successive approximations or integrated designs, and typically outperforms standard stand-alone references.
The AD581J/K/L is rated for operating temperatures ranging from 0°C to +70°C and the AD581S/T/U is from -55°C to +125°C. All grades are packaged in a sealed three-pin TO-5 metal cap case.