NVE Sensor and Isolator News
    August 2017 Electrifying  News  From  NVE
In This Issue
World’s Most Sensitive Magnetic Switch

GMR vs. Hall Effect Demonstration

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New YouTube Videos
Annual Meeting Demonstrations
World’s Most Sensitive Magnetic Switch Demonstration
Low-Power Isolated Transceiver Demonstration
Magnet distance Web application
Current sensing Web application

Document Updates
AFL-Series Ultrasensitive Low-Voltage Magnetic Switches
(added AFL006; see story at right)

Sensor Catalog
(added AFL006)
Analog sensor datasheet
(added AAL004—The world’s smallest analog sensor)
ADL-Series Nanopower digital sensor datasheet
(new reference circuits)
NEW! The World’s Most Sensitive
Magnetic Switch
The newest member of NVE’s industry-leading family of magnetic switches, the AFL006, is also the most sensitive, with a remarkable 4 Oersted typical operate point.

Key AFL006 features include:
  • 4 Oe operate point for ultrahigh sensitivity
  • 0.9 V – 2 V operating voltage for single-cell battery operation
  • Power less than 100 microwatts
  • 2.5 mm x 2.5 mm x 0.8 mm TDFN6 for miniaturization

AFL006 Block Diagram
Applications include portable instruments, utility meters, and noncontact overcurrent protection.

Like most of our GMR switches, the AFL006 is omnipolar, meaning the applied field can be of either polarity, and the operate point is extremely stable over supply voltage and temperature. Magnetic hysteresis is low for precise operation.

There are now three off-the-shelf versions of NVE’s AFL-Series ultrasensitive low-voltage magnetic switch family:
 Part Number   Typ.
4 Oe 0.9 – 2 V Button cell 2.5 mm
AFL000-10E 10 Oe
AFL200-00E 10 Oe 2.7 – 3.6 V Lithium battery or 3.3 V logic MSOP8
All three parts are in stock and available for immediate delivery.
Buy Sensors Online 
We can also provide a custom magnetic operate points, supply voltages, or packages. Contact us with your requirements.
Lab Results
GMR vs. Hall Effect Demonstration 
We went into the lab to demonstrate the world’s most sensitive magnetic switch—the new AFL006—compared to a typical Hall effect sensor:
Low-power isolated RS-485 demonstrataition

GMR is a “hall of a lot” better than Hall.
We showed that compared to a Hall effect sensor, the AFL006 GMR sensor is:
  • thirty times more sensitive;
  • two orders of magnitude lower power;
  • omnipolar, so you don’t have to worry about magnet polarity; and
  • smaller.
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