FEATURES AND BENEFITS
• Fully integrated solution has GMR IC, protection
capacitor, and back-bias magnet in a single in-line
overmolded package
• Innovative GMR technology provides large operational
air gap sensing on ferromagnetic targets
• Advanced algorithms for flexible design-in and
system compensation, automatically adapts to extreme
mechanical changes (air gap) and thermal drifts
• Measures differentially to reject common-mode stray
magnetic fields
• Orientation compatible with Hall-effect technology
• Integrated ASIL diagnostics and certified safety design
process (optional fault reporting)
DESCRIPTION
The ATS19480 is a giant magnetoresistance (GMR) integrated
circuit (IC) that provides a user-friendly two-wire solution
for applications where speed 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 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 provides accurate speed 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 output protocol 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 ATS19480 is provided in a lead (Pb) free 3-pin SIP
package with tin leadframe plating. The SN package includes
a GMR IC, a magnet, and capacitor integrated into a single
overmold, with an additional molded lead-stabilizing bar for
robust shipping and ease of assembly