Maxim Integrated MAX5217 16位数模转换器

Maxim Integrated MAX5217 16位数模转换器(DAC) 是单通道、低功耗、带电压缓冲输出的器件，它采用通过高阻值输入施加的精确外部基准，以实现轨到轨满摆幅工作并降低系统功耗。MAX5217采用通过高阻值输入施加的精确外部基准，以实现轨到轨满摆幅工作并降低系统功耗。Maxim MAX5217可承受很宽的从2.7V到5.5V的电源电压范围。该数模转换器输出带有缓冲，这样就实现了80µA（最大值）的低供电电流以及±0.25mV的低偏移误差。具有极低功耗，适合多数低功耗、低电压应用。它还有兼容I²C的2线串口，工作时钟频率高达400kHz。上电时，MAX5217将DAC输出复位至零，为驱动阀门或其它换能器等需要上电时处于关闭状态的应用提供安全保护。MAX5217评估套件(EV kit)用于演示MAX5217，并提供控制改变DAC输出和电源工作。

特性

  • Low-Power Consumption (80µA, max)
  • 18µs Settling Time
  • 16-Bit Resolution in a 3mm x 5mm, 8-Pin µMAX Package
  • Relative Accuracy
    • ±1.2 LSB INL (MAX5217, 16 Bit) typ, 4 LSB (max)
  • Guaranteed Monotonic Over All Operating Range
  • Low Gain and Offset Error
  • Wide 2.7V to 5.5V Supply Range
  • Rail-to-Rail Buffered Output Operation
  • Safe Power-Up-Reset to Zero DAC Output
  • I²C-Compatible 400kHz Serial Interface
  • User-Programmable Active-Low AUX Input Functions
    • Active-Low CLR, Clear to 0, Midscale, or Full Scale
    • Active-Low LDAC, Asynchronous Load DAC
  • 256kΩ Reference Input Resistance for Low Power Operation
  • Buffered Voltage Output Directly Drives 10kΩ Loads
  • Output Power-Down Terminated with 1kΩ or 100kΩ to Ground or Left High-Impedance

应用

  • Automatic Test Equipment
  • Automatic Tuning
  • Communication Systems
  • Data Acquisition
  • Gain and Offset Adjustment
  • Portable Instrumentation
  • Power Amplifier Control
  • Process Control and Servo Loops

Functional Block Diagram

框图 - Maxim Integrated MAX5217 16位数模转换器