ATS19580: Large Air Gap, GMR Transmission Speed and Direction Sensor IC for Gear Tooth Sensing


The ATS19580 is a giant magnetoresistance (GMR) integrated circuit (IC) that provides a user-friendly two-wire solution for applications where speed and direction information is required using ferromagnetic gear tooth targets. The fully integrated package includes the GMR IC, a protection capacitor for EMC robustness, and a back-bias magnet in a single-in-line package.

The GMR-based IC is designed for use in conjunction with ferromagnetic gear tooth targets and is orientation compatible with Hall-effect technology. The fully integrated solution senses at large operating air gaps and over a large air gap range. State-of-the-art GMR technology on a monolithic IC with industry-leading signal processing provide accurate speed and direction information in response to low-level differential magnetic signals. The differential sensing offers inherent rejection of interfering common-mode magnetic fields.

Integrated diagnostics are used to detect an IC failure that would impact the output protocol’s accuracy, providing coverage compatible with ASIL B (assessment pending). Built in EEPROM scratch memory offers traceability of the device throughout the IC’s product lifecycle. ASIL reporting can be enabled or disabled as a product offering depending on the applications’ needs.

The ATS19580 is provided in a lead (PB) free 3-pin SIP package with tin lead frame plating. The SN package includes a GMR IC, a magnet, and capacitor integrated into a single over-mold, with an additional molded lead-stabilizing bar for robust shipping and ease of assembly.

Top Features

  • Widest dynamic range of operating air gap (50% larger)
  • Distinguishes vibration from rotation with full pitch immunity (pitch = 1 tooth/valley of a gear)
  • Maintains tracking of flawed or damaged gears
  • Measures differentially to reject commode-mode stray magnetic fields
  • Advanced algorithms prevent flatline conditions by automatically adapting to mechanical and environmental shifts

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check Stock
ATS19580LSNBTN 3-lead SIP -40°C to 150°C Yes View Data New Contact your
local sales rep
Distributor Stock

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