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Allegro’s portfolio of camshaft sensor ICs is well suited to meet the applications needs for True Power-On State (TPOS) and non-TPOS engine controller requirements. Both options are available in a back-biased Gear-Tooth Sensor (GTS) package from Allegro for the highest performance and easiest implementation. Programmability of the ICs allow for modification of performance to match the specific target and application requirements of the end customer.

Allegro’s TPOS sensor IC uses a single sensing Hall element and allows for twist-independent installation. The non-TPOS sensor IC uses a differential pair of Hall elements to improve performance with small-feature camshaft targets and larger air gaps.

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Allegro’s portfolio of crankshaft sensor ICs is well suited to meet the applications needs for speed-only and direction detection requirements. Allegro was the first to market with Hall-effect crankshaft sensor ICs with direction detection (a required component for start-stop engine technologies), and leads the way in market performance for both speed-only and direction detection crankshaft sensor ICs.

Allegro sensor ICs are available in the Gear-Tooth Sensor (GTS) package with integrated back-biasing magnet for ease of implementation and high performance with a ferrous metal target; as well as in SIP package offerings with and without integrated bypass capacitors, for use with encoded ring magnet targets.

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Allegro offers a selection of wheel speed sensors optimized for today’s demanding ABS applications. Solutions are available for either ferrous targets or magnetic encoder rings, and for speed or speed-and-direction sensing capability. Allegro’s wheel speed sensors provide optimized performance in the presence of harsh automotive conditions. Advanced peak-detection algorithms provide robustness against vehicle dynamics, such as hard cornering, and micro-oscillations in static modes.

Allegro’s solutions offer over a decade of ABS specific IC designs based on the industry’s top professionals and vehicle manufacturers’ expertise. These sensor ICs also incorporate over a decade of lessons learned through the harsh, automotive scrutiny of in-vehicle testing and production. Allegro’s wheel speed sensors are offered in two current range options each using a two-wire, current output protocol. Direction information is offered in a two-wire, pulse width output protocol.

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Allegro’s diverse selection of speed sensor ICs provide optimized solutions for many non-automotive applications where speed or speed and direction information are needed. These sensor ICs can handle designs using various target geometries, materials, and sensing orientations. Allegro’s portfolio of speed sensor ICs contains solutions able to address requirements for applications needing both high and low frequency operation, detection of rotational direction, and small signals operation.

Allegro’s solutions offer over two decades of specific IC design advancements. These sensor ICs also incorporate lessons learned through our close work in automotive applications where many unique operational issues have been discovered and resolved through algorithm advancements. Allegro’s industry leading algorithms provide optimized performance for both two-wire, current source; and three-wire, open drain output protocols.

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Allegro’s diverse selection of speed sensors provide optimized solutions for standard and hybrid transmission applications. These sensors can handle any transmission design using various target geometries, materials, and sensing locations. Whether the need is for the vibration immunity and direction of rotation capability of a speed and direction sensor, or the capability of a standard speed sensor for a transmission input sensor or a high speed hybrid motor application, Allegro has the solution.

Allegro’s solutions offer over a decade of transmission specific IC designs based on the industry’s top professionals and vehicle manufacturers’ expertise. These sensor ICs also incorporate over a decade of lessons learned through the harsh, automotive scrutiny of dynamometer testing, in-vehicle testing, and production. Allegro’s industry leading algorithms will provide optimized vehicle performance in two-wire, current source or three-wire, open drain output protocols.