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Self-Calibrating TPOS Camshaft Speed Sensor

ATS679

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Description

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The ATS679LSL is a True Power-On State camshaft sensor incorporating a non-rare-earth back-biasing magnet, advanced fully synchronous digital IC, and EMC protection circuit all in a single sensing solution.

The ATS679 incorporates a single element Hall IC with an optimized custom magnetic circuit that switches in response to magnetic signals induced by a ferromagnetic target. The IC contains a sophisticated digital circuit designed to match the temperature behavior of the IC with the integrated magnet. Signal processing is used to provide zero-speed performance independent of air gap and is designed for the typical operating conditions found in automotive camshaft sensing applications. The resulting output of the device is a digital representation of the ferromagnetic target profile.

The ATS679 is provided in a 3-pin SIP package (SL) that is lead (Pb) free, with 100% matte-tin leadframe plating

• Fully synchronous digital logic with Scan Path and IDDQ testing for high quality and reliability
• Chopper stabilization reduces offset drift
• Absolute zero-speed performance
• SL package provides a fully integrated solution with a non-rare-earth back-biasing magnet and EMC protection circuit
• True target state recognition at device power-on (TPOS)
• EEPROM programming for performance optimization, temperature compensation, and production traceability

The ATS679 is provided in a 3-pin SIP package (SL) that is lead (Pb) free, with 100% matte-tin leadframe plating

SL Package Documentation

Part Number Specifications and Availability

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	Samples	Part Number	Direction Info	Physical Interface	Power-On State	Temperature	Integrated Components	Technology	Package	Part Composition / RoHS Data	Check Stock	ECAD
		ATS679LSLTN-HT-T	Speed	3-Wire (voltage)	Self-Calibrating TPOS	-40°C to 150°C	C1, C2, R1, R2, Magnet	Hall	3-Pin SIP	View Data	Check Distributor Stock
		ATS679LSLTN-LT-T	Speed	3-Wire (voltage)	Self-Calibrating TPOS	-40°C to 150°C	C1, C2, R1, R2, Magnet	Hall	3-Pin SIP	View Data	Check Distributor Stock

Part Number	Direction Info	Physical Interface	Power-On State	Temperature	Integrated Components	Technology	Package
ATS679LSLTN-HT-T	Speed	3-Wire (voltage)	Self-Calibrating TPOS	-40°C to 150°C	C1C2R1R2Magnet	Hall	3-Pin SIP
ATS679LSLTN-LT-T	Speed	3-Wire (voltage)	Self-Calibrating TPOS	-40°C to 150°C	C1C2R1R2Magnet	Hall	3-Pin SIP

Documentation and Resources

Documentation

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All Types Application Note

Documents Found: 2

Document Type	Document Name
Application Note	Method for Mechanical Mounting Tolerance Compensation on Allegro Speed Sensors
Application Note	Fundamental Properties of Speed Sensors