Quality Standards and Environmental Certifications

A19520: Vibration-Tolerant Hall Effect Transmission Speed and Direction Sensor IC

A19520 Datasheet

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The A19520 is an advanced vibration-tolerant Hall-effect integrated circuit (IC) that measures the speed and direction of rotating targets. This sensor IC can directly measure ring magnets or be back-biased with a magnet to measure ferrous targets. The package features an integrated capacitor for electromagnetic compatibility (EMC).

The A19520 employs intelligent algorithms that allow stable operation during vibration and highly dynamic air gap environments common to transmission applications. In addition, the A19520 differential sensing offers inherent rejection of interfering common-mode magnetic fields.

Integrated diagnostics in the A19520 are used to detect an IC failure that impacts the output protocol’s accuracy, providing coverage for functional safety.

The A19520 is provided in a 2-pin miniature SIP package (suffix UB) that is lead (Pb) free, with tin leadframe plating. The UB package includes an IC and capacitor integrated into a single overmolded package, with an additional molded lead-stabilizing bar for robust shipping and ease of assembly.

A19520 was developed in accordance with ISO 26262:2011 as a hardware safety element out of context with ASIL B capability (pending assessment) for use in automotive safety-related systems when integrated and used in the manner prescribed in the applicable safety manual and datasheet.

Differential Hall-effect sensor measures ring magnets and ferrous targets with inherent stray field immunity
SolidSpeed Digital Architecture™ provides robust, adaptive performance with advanced algorithms that provide vibration immunity over the full target pitch
Integrated solution includes a capacitor in a single overmolded miniature package
Integrated diagnostics and certified safety design process
Two-wire current source output pulse-width protocol supporting speed, direction, and error reporting
EEPROM enables factory traceability

Typical Applications

Transmission

Part Number Specifications and Availability

Part Number	Package Type	Temperature	RoHS Compliant	Part Composition / RoHS Data	Samples	Check Stock
A19520LUBBTN-FSNHPYUE-A	2-lead SIP	-40°C to 150°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock
A19520LUBBTN-RSNHPYUE-A	2-lead SIP	-40°C to 150°C	Yes	View Data	Contact your local sales rep	Check Distributor Stock
ATS19520LSNBTN-RSWHPYU	3-lead SIP	-40°C to 150°C	--	View Data	Contact your local sales rep	Check Distributor 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.