NVE Sensor and Isolator News
    February 2014 Electrifying  News  From  NVE
In This Issue
New Angle Sensor


Buffered Angle Sensing

Quick Links
Sensor Selector Guide

Isolator Selector Guide

Online Store

Contact Us

New Documents

Application Bulletin 24:
IsoLoop Isolators have excellent thermal characteristics

NEW!TMR Angle Sensor
The new AAT003-10E angle sensor is a high-output magnetic sensor element for position measurements when a rotating magnetic field is applied.

AAT-Series Operation

The new part has the same best-in-class accuracy as the groundbreaking AAT001-10E, but with lower bridge resistance for a relatively low-noise interface to signal-processing circuitry while still maintaining low power operation.

Key features include:
  • Tunneling Magnetoresistance (TMR) technology
  • 0.5 degrees maximum angular measurement error
  • Large output signal without amplification
  • 40 kilohms nominal bridge resistance
  • Wide airgap tolerance
  • Sine and cosine outputs for direction detection
  • Ultraminiature 2.5 mm x 2.5 mm x 0.8 mm TDFN6
  • Not damaged by large magnetic fields

AAT-Series Sensor outputs are proportional to the supply voltage and peak-to-peak output voltages are much larger than other sensor technologies. Typical applications include rotary encoders and motor shaft position sensors.

The other member of the AAT family, the AAT001 Angle Sensor, has 1.25 megohm nominal bridge resistance for microwatt power consumption and is ideal for battery applications.

Product specifications are summarized as follows:

Parameter  Min.   Typ.   Max.   Units 
Bridge Resistance
(each resistor; 25°C) 
AAT001 600 1250 2500
 AAT003  20 40 60
Peak-to-Peak Output
130 160 mV/V
Angular Measurement
Error (fixed bias)
0.5 Deg.
Required Applied
Magnetic Field Strength
30 200 Oe
Download AAT-Series Datasheets >
Buy Online
Upcoming Exhibitions
Embedded World 2014
Isolator distributor HY LINE Power Components is exhibiting at the Embedded World exhibition, February 25 to 27 in Nuremberg, Germany. IsoLoop Isolated Bus Transceivers are popular for embedded applications.
Reference Design
Buffering Angle Sensors
AAT-Series Angle Sensors can be directly connected to high-impedance analog front ends or other circuitry, or a buffer can be used if necessary for lower impedance circuitry:
AAT-Series Buffer Reference Circuit
AAT001/AAT003 Buffer Reference Circuit
The op amp minimum supply voltage is 1.5 volts, while the AAT-Series sensors have no minimum. Sensitivity increases proportionately to the sensor supply voltage, as does current consumption.