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Low-Power, Single Hall-Effect Sensors

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

Product Details

Key Features

Simplified Block Diagram

Support & Training

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Sampling:
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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

Applications/Uses

Description

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.

Simplified Block Diagram

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.