A1266: Micropower Ultrasensitive 3D Hall-Effect Switch

A1266集成电路是一个超声静脉效应开关，具有3D全峰磁性致动。单芯片芯片包括：三个霍尔板，多路复用器，小信号放大器，斩波稳定，施密特触发器和NMOS输出晶体管。当在任何方向上将足够强度的磁场施加到传感器时，器件输出打开。去除磁场将关闭输出。

Two versions of the A1266 offer a choice of output format: separate X, Y, and Z outputs, or a combined X+Y+Z output. The low operating supply voltage, 2.5 to 5.5 V, and unique clocking algorithm assist in reducing the average power consumption, making it ideal for battery operation (e.g., the power consumption is less than 25 μW with a 3.3 V supply).

The small geometries of the BiCMOS process allow for ultrasmall packages suitable for even space-constrained applications. In this case, a modified SOT23-W surface-mount package is available in a 3-pin (combined output) or a 5-pin (separate outputs) configuration, magnetically optimized for use in a variety of orientations. The packages are lead (Pb) free and RoHS-compliant, with 100% matte-tin leadframe plating.

• True 3D sensing
• Omnipolar operation with either north or south pole
• 2.5 to 5.5 V operation
• Low supply current
• 高灵敏度，b_op.typically 25 G
• 斩波稳定的抵消取消
  • Superior temperature stability
  • Extremely low switchpoint drift
  • Insensitive to physical stress
• 固态可靠性
• Choice of output format
  • Separate X, Y, and Z outputs
  • Combined (X+Y+Z) output
• Tiny SOT-23 packages