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AET-Series TMR Linear and Off-Axis Rotational Encoder Sensors

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AET-Series TMR Linear and Off-Axis Rotational Encoder Sensors Bootstrap Modal with Dynamic Content × Close Sensors ▾ Sensor Products   Analog Sensors     Angle & Rotation Sensors     Current Sensors     Gear Tooth (GT) Sensors     Linear & Rotation Encoder Sensors     Magnetic Switch Sensors     Medical Sensors     Smart Sensors     Evaluation Kits     PCBs for NVE Sensors    Calculators / WebApps   Magnetic Unit Conversion     Axial Disc Magnet Field     Rectangular Magnet Field     Digital Sensor Distance     Current Sensing     Gear Tooth Sensor Output     On-Axis Angle Sensing     Off-Axis Angle Sensing     Application Notes     Independent Papers     Reference Designs     YouTube Videos     Sensor Downloads     Sensor FAQs     Sensor News     Sensor Catalog     Sensor Sales     Online Store   Isolators ▾ Isolator Products   Selector Guide     IL01x Low-Power     IL400 / IL3000 Transceivers     IL500 Low Cost Isolators     IL600 Passive Input     IL600CMTI (300 kV/µs CMTI)     IL700 / IL200 Digital Input     IL700S Ultra High Speed     IL700T High Temperature     IL800 Top-of-the-Line Isolators   Passive-In Transceivers   V Series Isolators (up to 7 kV isolation)     MSOP Isolators   QSOP Isolators   Narrow-Body Isolators   Wide-Body Isolators   Evaluation Boards   ▾ Application Centers   Isolated PLCs   RS422/RS485/PROFIBUS   Isolated CAN Bus   Other Serial Interfaces   Isolated ADCs/DACs/SPI   High Fidelity Audio   Isolated Power Interfaces   Battery Management   Isolator Downloads   Cross Reference   Reference Designs   Application Notes   Isolator FAQs   Isolator News   Isolator Sales   Online Store Power Power-IC Products Power-IC Downloads Sales ▾ Product Sales   Sensors   Isolators   Online Store About ▾ Company Information Corporate Identity Spintronics Careers At NVE Videos GitHub Downloads Glossary Fun Facts News Press Releases In the News Earnings Reports Product Newsletters Papers & Presentations Awards Independent Papers   Certifications Declarations and Certificates - Quality - ISO 9001:2015 - Environmental - Environmental Compliance Conflict Minerals Report Conflict Minerals RMI CMRT Extended Minerals Reporting Template (EMRT) EU MDR Declaration of Compliance California Proposition 65 Statement - Safety - IEC 62368-1 Certificate of Compliance (audio/video, information, and communication technology equipment) VDE Manufacturing Site Approval VDE 0884-17 Basic Isolation VDE 0884-17 Reinforced Isolation UL1577 Isolation IECEx Certificate of Conformity under IEC Certification System for Explosive Atmospheres ATEX Certificate for Intrinsically Safe Isolators - Other - Anti-Forced Labor and UFLPA Compliance Investors ▾ Investor Relations Fact Sheet Stock Quote Investor Events Earnings Reports Annual Reports Corporate Governance ESG Stock Indices Analysts Rankings Investor FAQs Contact Data Sheets Data Sheets (.pdf) Sensors AA Series AAT001/AAT009 AAT003 AAT006 AAT101 AB Series ABT Series ABL Series ACT001 AD Series ADA Series ADK991 ADL Series ADT001 ADT002 ADT501 ADT9xx ADV Series AET Series AFL Series AHL Series AHK991 AHT Series AKL Series AKT001 ALT Series ALT 521 D Series ASR002 ASR012 ASR022 SM12x Series SM223 SM225 SM228 SM324 Isolators IL01x IL260 IL261 IL262 IL2985 IL3022 IL3085 IL3122 IL3185 IL3222 IL3285 IL3422 IL3485 IL3522 IL3585 IL3685 IL3685P IL41050TT IL41050TA IL41050TFD Series IL422 IL485 IL485W IL4622 / IL4685 / IL4822 IL5xx Series IL6xx Series IL6xxA Series IL6xxCMTI Series IL710 IL711 IL712 IL715 IL716 IL717 IL721 IL76xx / IL78xx Series IL8xxT Series Power ICs ACT001 DB001 DC001 DC002 ILDC1x NVE Home > Sensors > Linear and Rotation Encoder NVE Sensors Products Analog Sensors Angle & Rotation Sensors Current Sensors Gear Tooth (GT) Sensors Linear & Rotation Encoder Sensors Magnetic Switch Sensors Medical Sensors Smart Sensors Evaluation Kits PCBs for NVE Sensors Application Notes Independent Papers Reference Designs WebApps Sensor Downloads Sensor FAQs Sensor News Sensor Sales About > Videos Short-Form Sensor Catalog (.pdf) AET-Series TMR Linear and Off-Axis Rotational Encoder Sensors NVE’s AET-Series sensor elements are versatile, wide-airgap sensors typically used with multipole ring magnets, both radial and face poles, and magnetic linear scale. Standard spacing sensors can detect pole pitches from 0.5 mm to 5 mm. The sensors are Wheatstone bridges comprised of tunneling magnetoresistance (TMR) elements. Both full-bridge and half-bridge versions are available.

The AETxxxF full-bridge sensors offer excellent noise immunity and large differential output signals, and they fully cancel common-mode interference fields. AETxxx half-bridge sensors combine high performance with a half-bridge outputs interface, ideal for simplicity and miniaturization. They can be influenced by common-mode magnetic fields above 1 millitesla.

AET-Series TMR Encoder Sensors Part Number Half or Full Bridge Pole Pitch (normal mode) Pole Pitch (double pitch mode) Package AET500-02E Half 5 mm N/A SOIC8 AET050F-00E Full 0.5 mm 1 mm MSOP8 AET075F-00E Full 0.75 mm 1.5 mm MSOP8 AET100F-00E Full 1 mm 2 mm MSOP8 AET120F-00E Full 1.2 mm 2.4 mm MSOP8 AET-Series Datasheet Magnetic Pitch and Pole Pitch The AET-Series are linear sensors designed for detecting multipole magnets for off-axis rotational or linear scale applications. The TMR sensor elements are bipolar, meaning they detect both north and south magnetic fields.



AET-Series sensors are named based on the north-south “pole pitch” they are optimized to detect. The sensor’s sine and cosine outputs are periodic with the “magnetic pitch.” As an example, to detect a magnetic strip with “pole pitch” (specified by the manufacturer) of 1 mm, choose AET100F-00E. The sensor provides sine and cosine output signals, with a full cycle occurring every 2 mm.

Other common configurations for the AET-Series are illustrated below, where the same comments about “pole pitch” and “magnetic pitch” apply. The sensor output amplitude scales approximately linearly with airgap, reaching the maximum value when the sensor face is at the magnet face. The outputs scale ratiometrically with the supply voltage.

Evaluation Kits An evaluation kit is available for the AET-Series sensors. NVE also offers a linear magnetic scale demonstration featuring the AET500-02E sensor.

AG970-07E AET-Series Evaluation Kit

The AG970-07E Evaluation Kit helps with testing a variety of AET-Series sensors with linear magnetic scales. The kit includes: All five AET-Series parts (unsoldered in tubes) A 3 x 4-inch (76 x 101 mm) PCB with test points and screw terminals Detachable fixturing for linear magnetic tape (tape sold separately)

AG965-07E AET500 Micron Precision Demonstration

The AG965-07E demonstration kit showcases micron precision with an AET500-02E sensor. The kit includes: A 3 x 5-inch (76 x 127 mm) PCB    An AET500-02E 5 mm pole-pitch sensor A four digit position display Part #12592 5mm pole pitch magnetic tape 3-D printed fixturing LEDs for pole detected Powered by three AAA batteries (included)

NVE also sells linear scale magnets that can be used with AET-Series sensors:



Part Number Pole Pitch Typical Flux Density @ Airgap 12589 0.5 mm 20 mT @ 0.2 mm 12590 1 mm 20 mT @ 0.4 mm 12591 2 mm 30 mT @ 0.7 mm 12592 5 mm 30 mT @ 1.4 mm Your browser does not support video.
 AET500 Magnetic Linear Encoder Demonstration Your browser does not support video.
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