NVE Sensor and Isolator News
    January 2020 Electrifying  News  From  NVE
In This Issue
Year in Review

High-Field TMR Magnetic Switches

4 mT GMR Smart Magnetometer

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New on YouTube
The AHK991 High-Field TMR Switch for Security
ADT-Series 3 V TMR Switches
AHT-Series 1.5 V TMR Switches

In the News

NVE is highlighted in a recent article in Elektronik International titled, “Bye-Bye Optocoupler.”


An excerpt: “Optocouplers are no longer fast enough for today’s data technology. So what are the alternatives?” (spoiler alert: they’re made by NVE).


New Catalogs
Our popular Sensor and Isolator catalogs have been updated with a number of new products:

Download Sensor catalog »

Download Isolator catalog »
Year in Review

new product highlights included: 
SM124 Smart GMR Magnetometers
SM12x magnetometers are versatile sensors with omnipolar GMR sensor elements, sophisticated digital signal processing, an I2C interface, and a programmable threshold output.

The SM124 has a 1 mT linear range and the SM125 has a 4 mT linear range. Like all of our smart sensors, it is factory calibrated and comes in an ultraminiature 2.5 x 2.5 mm DFN.
Smart TMR Magnetometer
The SM225-10E Smart Magnetometer has a TMR sensor element to provide a wide -15 to 15 mT linear range and a fast 15 kSps update rate via an SPI interface. It is ideal for noncontact current sensing.
ASR002 Smart Angle Sensor
The ASR002-10E is the world’s first Smart TMR Angle Sensor, providing a extraordinary combination of speed and precision.
Nanopower TMR Magnetic Switches
The 1.5-volt AHT-Series, 3-volt ADT-Series, and high-field AHT991 magnetic switches are nanopower, high speed, and ultraminiature.

They are ideal for battery-powered applications, and their continuous operation without duty cycling means a virtually instantaneous response.
CAN FD Isolated Transceivers
NVE’s popular line of isolated CAN transceivers was expanded to include CAN FD, which has up to five times the data rate of standard CAN.

Like all of our isolated transceivers, the new CAN FD transceivers are available in NVE’s unique QSOP16 package, which is the world’s smallest isolated transceiver, as well as narrow and wide SOIC16s.

Our unique polymer/ceramic composite barrier provides best-in-class barrier resistance and virtually unlimited barrier life.
Isolated Transceiver for 3V RS-485
We expanded our popular line of isolated transceivers with the IL3685P, designed to work with next-generation RS-485 buses.

The new IL3685P is compatible with 3.3V buses, has 1/5 Unit Loading to support up to 160 nodes, and 16.5 kV bus ESD protection. It’s perfect for industrial control networks and DC-DC convertor-powered buses.
TMR Bipolar Analog Magnetic Sensor
Ideal for current or proximity sensing, the new ALT005 and ALT025 are TMR analog bridge magnetometers with high 20 mV/V/mT sensitivity, 20 kiloohm device resistance for low power, and a full -40 to 125 °C temperature range. The output is bipolar, meaning it is positive for a positive field and negative for an opposite field polarity.

NEW! High-Field TMR Magnetic Switches
The unique AHK991-14E is a high-field, low voltage, low power, Tunneling Magnetoresistance (TMR) magnetic switch.

High Fields
The new sensors have a 350 mT (3500 Oe) typical operate point, which is high enough to detect close-proximity rare-earth magnets. The sensors can withstand unlimited fields without being damaged or turning off.

The digital output turns on and off as field intensity varies. Unlike Hall effect or other sensors, the switch is sensitive to magnetic fields in any direction, so multiple sensors are not needed for orthogonal or unknown directions of applied fields.

Low Voltage
AHK991 sensors operate as low as 0.9 volts, so they can be powered by single-cell alkaline batteries.

Low Power
TMR technology provides ultralow power. Typical AHK991 quiescent supply current is just 2 microamps, even with no duty cycling. That’s less than the self-discharge rate of some button cells, making the new sensors ideal for battery applications such as utility meters or portable instruments.

Configured as Switches
Outputs are configured as magnetic “switches,” turning on when a magnetic field is applied and off when the field is removed. The magnetic operate point is extremely stable over supply voltage and temperature.

Continuous operation without duty cycling means the sensors can switch at 3000 Hz.

AHK991 Sensors fit on the head of a pin
AHK991 sensors come in ultraminiature 1.1 x 1.1 x 0.35 mm ULLGA-4 packages.

Key Specifications
  • 350 mT operate point
  • 0.9 to 1.8 V
  • 2 µA typical supply current
  • 3000 Hz switching speed
  • -40 to 85°C

Here’s a demonstration:

Download the AHK Datasheet »

Available Now
Parts are in stock for immediate delivery:
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NEW! 4 mT GMR Smart Magnetometer
NVE expanded its industry-leading line of GMR Smart Sensors with the SM125-10E, a higher-field (4 mT) version of the popular SM124-10E 1 mT GMR Smart Magnetometer.

The SM124-10E and SM125-10E feature programmable threshold outputs and IC interfaces, and have better than 1% precision.

Demo Boards are also available.

Buy Online
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