سنسور و مبدل سنسور مغناطیسی سوییچ اثر هال

Product Attributes

Introduction

The CH913/CH913L is a high- sensitivity extremely temperature- stable micro- power Omnipolar Hall effect switch IC with internal pull down capability. Designed for portable and battery powered consumer equipment such as cellular phones and portable PCs to office equipment, home appliances and industrial applications, the average supply current is only 1.62μA at 3.3V for CH913 and 0.92uA at 3.3V for CH913L. To support potable equipment the CH913/CH913L can operate over the supply range of 1.8V to 5.5V and uses a hibernating clocking system to minimize the power consumption. The device includes a clocking system, a Hall- voltage generator, a small- signal amplifier, a chopper stabilization, two Schmitt trigger, and an output driver controller. The output is activated with either a north or south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (Bop), the output will be turned on (pulled low) and held until B is lower than release point (Brp). Two package styles provide a magnetically optimized package for most applications, SO- T23 and TO- 92S. Each package type is lead (Pb) free (suffix, - T), with a 100% matte- in- plated leadframe.

Features

• Micro- power Omnipolar- Switch Hall Sensor
• Multiple Sensitivity Options (BOP / BRP): ±35 / ±25 Gauss
• Open Drain output ability
• Chopper stabilized design provides:
  • Superior temperature stability
  • Minimal switch point drift
  • Enhanced immunity to physical stress
• On board voltage regulator for 1.8V to 5.5V range
• Open Drain Output (1 mA Sink)
• Solid- state reliability
• Wide Operating temperature range: - 40 to 150℃
• Small package sizes TO- 92S,SOT- 23
• RoHS- compliant material meets directive 2011/65/EU

Applications

• Open and Close Detect for Flip/Slide Cellular Phones
• Smart Cover or Dock Detect for Cellular Phones and Tablet PCs
• Cover or Display Switch in Portable PCs (eg: Ultrabook)
• Digital Still, Video Cameras and Handheld Gaming Consoles
• Door, Lids and Tray Position Switches
• Contact- Less Switches in Home Appliances and Industrial Applications