A19570: Large Air Gap, Vibration-Immune, GMR Transmission Speed and Direction Sensor IC

The A19570 is a giant magnetoresistance (GMR) integrated circuit (IC) that is ASIL B certified and ideal for transmission applications. Using a two-wire interface, the A19570 brings the same high performance as its Hall effect counterparts—but at significantly larger air gaps and with flexible device orientations.

It addresses the latest transmission speed sensing applications requirements:

  • Greater air gap capabilities with GMR sensing elements
  • Perpendicular read to reduce footprint in space-constrained applications
  • Advanced algorithms for vibration, DAG, and SAG
  • Improved EMC performance with two capacitor values

The A19570 senses both speed and direction of ring magnets. It is offered in the UB package, which integrates the IC and a high-temperature ceramic capacitor in a single over-molded SIP package with enhanced EMC performance. The IC incorporates state-of-the-art GMR circuits and signal processing that switch in response to differential magnetic signals created by magnetic encoders. The circuitry includes a sophisticated digital controller that provides highly-accurate speed detection, rotational direction detection, and true zero speed operation, ideal for transmission applications.

The IC includes built-in EEPROM scratch memory, available for device traceability throughout sensor module production.

The 2-pin SIP package is lead (Pb) free, with tin lead frame plating.


Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
700 Veterans Memorial Hwy
Suite 310
Hauppauge, NY 11788
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • GMR technology integrates high sensitivity MR (magnetoresistive) sensor elements and high precision BiCMOS circuits on a single silicon integrated circuit offering high accuracy, low magnetic field operation 
  • Integrated capacitor in a single overmolded miniature package provides greater EMC robustness 
  • SolidSpeed Digital Architecture supports advanced algorithms, maintaining performance in the presence of extreme system-level disturbances, including vibration immunity capability over the full target pitch 
  • Flexible orientation for xMR or Hall replacement and application installation flexibility 
  • ASIL-B rating based on integrated diagnostics and certified safety design process 
  • Two-wire current source output pulse-width protocol supporting speed, direction, and ASIL 
  • EEPROM offers device traceability throughout the production process 
ARS19510 Packages

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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A19570LUBBLU-FSWPH 2-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
A19570LUBBTN-FSWPH 2-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
A19570LUBLBU-FSWPH 2-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
A19570LUBLLU-FSWPH 2-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
A19570LUBLTN-FSWPH 2-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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