Low-Power, Single Hall-Effect Sensors

Industry's First Adjustable-Threshold, Single Hall-Effect Sensors Save Power and Add Flexibility to Design

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The MAX9639 is a single omni-polar Hall effect switch. It has an output that is asserted if the magnetic field exceeds an adjustable threshold, regardless of the polarity of the field. A threshold adjust pin can be tied high, tied low, or floated to select one of the three preset thresholds.

The MAX9640 is a Hall effect switch that detects the direction as well as the magnitude of the magnetic field. It has an output that is asserted if the magnetic field exceeds an internal threshold, regardless of the polarity of the field. It has another output that indicates the direction of the field (N versus S).

The MAX9639 and MAX9640 are offered in a tiny 4-bump WLP (1.2mm x 1.2mm x 0.6mm) and are optimized for ultra-low-current applications that require slow sampling rates such as open/close detection in portable equipment.

Key Features

  • 1.7V to 5.5V Supply Voltage Range
  • Ultra-Low Supply Current
  • Adjustable Thresholds (MAX9639)
  • Polarity Indicator (MAX9640)
  • CMOS Output Eliminates the Need for an External Pull-Up Resistor
  • Operation with North or South Pole
  • Tiny 4-Bump WLP (1.2mm x 1.2mm x 0.6mm)
  • -40°C to +125°C Temperature Range
Request Reliability Report for: MAX9640 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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