Analog Devices Inc. AD512x/514x 非易失性数字电位计

Analog Devices AD512x/AD514x 数字电位计提供了针对128-/256-位调整应用的非易失性解决方案,保证±8%的低电阻容差误差,±A、B和W引脚之间的电流密度可达6mA。低电阻容差和低标称温度系数简化了开环应用和需要容差匹配的应用。线性增益设置模式允许对数字电位计端子RAW和RWB之间的电阻独立编程,使电阻匹配非常精确。 宽带宽和低总谐波失真(THD)确保对于交流信号具有最佳性能,适合于滤波器设计。在电阻阵列末端的低游标电阻仅40Ω,允许进行引脚到引脚连接。

特性

  • 10kΩ and 100kΩ resistance options
  • Resistor tolerance: 8% maximum
  • Wiper current: ±6mA
  • Low temperature coefficient: 35ppm/ºC
  • Wide bandwidth: 3MHz
  • Fast start-up time: < 75μs
  • Linear gain setting mode
  • Single- and dual-supply operation
  • Wide operating temperature: −40ºC to +125ºC
  • 3mm × 3mm package
  • 4kV ESD protection

应用

  • Portable electronics level adjustment
  • LCD panel brightness and contrast controls
  • Programmable filters, delays, and time constants
  • Programmable power supplies

Block Diagrams