Allegro MicroSystems Magnetic Speed Sensor ICs
Allegro MicroSystems Magnetic Speed Sensor ICs offer a comprehensive portfolio covering the full range of speed and speed with direction sensor ICs. These products include a two- and three-wire interface, a magnetic encoder (ring magnet) and gear tooth sensing, Hall and GMR technology, and ASIL-compliant options for transmission, wheel speed, engine, e-motors, and many more encoder and gear tooth sensing applications.
Innovative Hall-effect and GMR technologies support robust and reliable gear tooth and ring magnet speed sensing. Combining application and algorithm experience with OEMs, these application-specific speed sensor ICs were developed. The Magnetic Speed Sensor ICs utilize these features for their target applications, improving safety and performance.
The Allegro MicroSystems Magnetic Speed Sensor ICs include:
Camshaft Sensor ICs
Fully integrated IC solutions for EMC protection and true power-on state (TPOS). Optional back-biased magnets simplify designs while improving performance.
Crankshaft Sensor ICs
The fully integrated ICs are also highly flexible with high performance and excellent edge accuracy. These include optimized solutions for engines in 2-wheelers and advanced solutions essential for start-stop engines.
Special Purpose and E-Motor Speed Sensor ICs
This portfolio supports optimized speed sensor IC solutions for many non-automotive applications.
Transmission Sensor ICs
The ICs are ready for any challenge presented by fuel-efficient 6 to 10-speed transmissions, providing users with industry-leading vibration immunity and dynamic air gap capability.
Wheel Speed Sensor ICs
Innovative GMR technology delivers low jitter and high air gap over the most comprehensive installation tolerance.
Features
- Dynamic compensation for system-level variation (i.e., target runout, vibration, thermal gradients) reducing design-in complexity and costs and increasing reliability
- Integrated packaging for EMC protection, as well as optional magnetic biasing that simplifies design and assembly while improving performance
- Integration of discrete components to eliminate the need for external PCB and components, significantly reducing total system cost (third generation GTS packages)
Videos
Associated Products
Allegro MicroSystems ATS601 Single-Element Speed Sensor IC
A unique camshaft sensor IC that is a single-element, defined power-on state sensor IC.
Allegro MicroSystems ATS19580 Large Air Gap GMR ICs
A giant magnetoresistance (GMR) IC that supports a user-friendly two-wire solution.
Allegro MicroSystems ATS17501 Dual Output Sensor ICs
Designed for rotational position sensing of a ferrous gear target in automotive and industrial apps.
Allegro MicroSystems A19302 Hall-Effect Sensor ICs
Optimized Hall-effect integrated circuit (IC) with the PW- or AK-protocol two-wire interface.
Allegro MicroSystems A17501 Dual Output Speed & Sensor ICs
Designed for rotational position sensing of a ring magnet target in electric motor applications.
Allegro MicroSystems A17502 Dual Output Speed & Direction Sensor ICs
Designed for rotational position sensing of a ring magnet target in electric motor applications.
Allegro MicroSystems A5947 Three-Phase Sensorless Fan Driver ICs
ICs consist of a sensorless sinusoidal drive to minimize vibration for various fan applications.
Allegro MicroSystems A8511 Multioutput WLED/RGB Driver
A fully integrated high-brightness (HB) LED driver solution for medium-size backlighting displays.
Allegro MicroSystems A4915 Three-Phase MOSFET Drivers
5V to 50V voltage range & are capable of high current gate drive for all 6 N-channel power MOSFETs.
Allegro MicroSystems A1220/A1221/A1222/A1223 Hall-Effect Sensor ICs
Temperature-stable devices designed for operation over extended temperature ranges up to 150°C.
Allegro MicroSystems A1225/A1227/A1229 Hall-Effect Sensor ICs
Temperature-stable devices designed for operation over extended temperature ranges up to 150°C.
Allegro MicroSystems A115X Two-Wire Hall-Effect Switch ICs
A family of unipolar factory-trimmed switch ICs to optimize magnetic switchpoint accuracy.
Allegro MicroSystems A1308 & A1309 Linear Hall-Effect Sensor ICs
With analog output available in a miniature, low-profile surface-mount package.
Allegro MicroSystems A8652 & A8653 Synchronous USB Buck Regulators
Wide input voltage regulators with remote load regulation.
Allegro MicroSystems A8654 Synchronous Buck Regulator
Designed to integrate low RDSON high-side and low-side N-channel MOSFETs.
Allegro MicroSystems APS122x Hall-Effect Sensor ICs
Three-wire sensor ICs ideal for high-temperature operation up to 175°C junction temperatures.
Allegro MicroSystems ACS724 & ACS725 High-Accuracy Current Sensors
AEC-Q101 qualified and offers a 5V operation supply voltage and a 120kHz analog output.
Allegro MicroSystems A4919 MOSFET Drivers with Integrated Regulators
Designed for N-Channel external power MOSFETs and offer a 5.5V to 50V voltage range.
Allegro MicroSystems A4942 Three-Phase Sensorless Fan Driver IC
Incorporates BEMF sensing to eliminate the requirement for Hall sensors in fan applications.
Allegro MicroSystems A4950 Full-Bridge DMOS PWM Motor Controllers
For pulse width modulated (PWM) control of DC motors and are capable of operating voltages to 40V.
Allegro MicroSystems A4955 Full-Bridge PWM Gate Drivers
Designed for pulse-width-modulated control of DC motors and is capable of 50V operation.
Allegro MicroSystems A5932 Sinusoidal Sensorless Fan Controllers
Incorporates a sinusoidal drive to minimize audible noise and vibration for high-power fans.
Allegro MicroSystems A6211 PWM Dimmable Buck Regulator LED Driver
A single IC switching regulator that provides constant-current output to drive high-power LEDs.
Allegro MicroSystems A6214 & A6216 Auto PWM Dimmable LED Drivers
AEC-Q101 qualified and offer a 4.5V to 55V supply voltage range with an integrated MOSFET switch.
Allegro MicroSystems A6217 Auto PWM Dimmable Buck Regulator LED Drivers
Offers a 6V to 48V supply voltage range, 3A maximum output, and are AEC-Q101 qualified.
Allegro MicroSystems ACS70310 & ACS70311 Linear Hall-Effect Sensor ICs
Has a Hall element with BiCMOS integrated circuitry for a monolithic linear current sensor IC.
Allegro MicroSystems ACS73x Galvanically Isolated Current Sensor ICs
Offers a 1MHz bandwidth with a lightning-fast 210nS response time for AC or DC current sensing.
Allegro MicroSystems ALT80800 PWM Dimmable Synchronous Buck LED Driver
AEC-Q100 qualified and provides constant current output to drive high-power LEDs.
Allegro MicroSystems ALT80802 Adjustable Frequency Buck 2A LED Driver
AEC-Q101 qualified and supports buck-boost or buck-mode operation.
Allegro MicroSystems AMT49406 Code-Free FOC BLDC Motor Controller ICs
3-phase, sensorless, brushless DC (BLDC) motor drivers (gate drivers) operating from 5.5V to 50V.
Allegro MicroSystems A1468 3-Wire Differential Peak-Detecting Sensor IC
Optimized Hall-effect sensing IC for digital ring-magnet sensing in three-wire applications.
Allegro MicroSystems ATS468 Differential Peak-Detecting Sensor IC
Optimized Hall IC and a permanent magnet pellet configuration in a single overmolded package.
Allegro MicroSystems ATS627LSG High Accuracy Position Sensor ICs
Consists of an optimized Hall IC and rare-earth pellet configuration in a single overmolded package.
Allegro MicroSystems Special Purpose & E-Motor Speed Sensor ICs
Offers an extensive portfolio of optimized solutions for many non-automotive applications.
Allegro MicroSystems ATS128LSE Sensor IC
Highly programmable, back-biased, hall-effect switch with TPOS functionality.
Application Solutions
Allegro MicroSystems Special Purpose & E-Motor Speed Sensor ICs
Offers an extensive portfolio of optimized solutions for many non-automotive applications.
Allegro MicroSystems Camshaft Position Sensor ICs
Provides fully integrated camshaft position sensor IC solutions for EMC protection and TPOS.
Allegro MicroSystems Crankshaft Position Sensor ICs
Offers direction detection, vibration robustness, and high accuracy out of stop/start conditions.
Allegro MicroSystems Transmission Sensor ICs
A comprehensive portfolio utilizing leading Hall & GMR technologies w/output interfaces & protocols.
Allegro MicroSystems Wheel Speed Sensor ICs
Feature GMR technology, offering a low jitter and high air gap over an installation tolerance.
Additional Resources
- Allegro ICs Based on Giant Magnetoresistance (GMR)
- Transmission Speed and Direction Sensor IC for Gear Tooth Sensing Brochure
- The Future of Automotive Wheel Sensing with GMR
- Allegro Product Selection Guide
- Transmission Gear Tooth Sensing
- Differential Hall-Effect Sensors for Two-Wheelers
- Target Design for Hall Transmission Sensors
- Fundamental Properties of Speed Sensors
- Speed Sensor Protocols
- Ring Magnet Speed Sensing for Electronic Power Steering
- Impact of Magnetic Relative Permeability of Ferromagnetic Target on Back-Biased Sensor Output
- Driving Change: Advancing Personal Mobility Through Cutting-Edge Technology
- Webcast: Maximizing System Performance with Intelligent Motor Drivers
Associated Dev Tools
Allegro MicroSystems APEK8652KLP & APEK8653KLP Demonstration Boards
Boards designed to evaluate the A8652 and A8653 USB buck regulators.
Allegro MicroSystems A4950 Evaluation Kit
Used to evaluate the A4950 Full-Bridge DMOS PWM Motor Driver.
Allegro MicroSystems A6217 Evaluation Kit
Used to evaluate the A6217 Buck Regulator LED Driver.
Allegro MicroSystems A6214 & A6216 Evaluation Kits
Used to evaluate the A6214 and A6216 Dimmable Buck Regulator LEDs.
Allegro MicroSystems A6211 Evaluation Kit
Used to evaluate the A6211Dimmable Buck Regulator LED Driver.
Allegro MicroSystems A4919 Evaluation Kit
Intended to demonstrate the A4919 Three-Phase MOSFET Driver.
Allegro MicroSystems A4915 Evaluation Kit
Designed for a voltage supply and a motor and comes with six N-Channel power MOSFETs.
Allegro MicroSystems ALT80802 Evaluation Kit
Used to evaluate the ALT80802 Buck 2A LED Driver.
Allegro MicroSystems ALT80800 Evaluation Kit
Used to evaluate the ALT80800 regulator.
Allegro MicroSystems Current Sensor Evaluation Boards
Allows quick evaluation of Allegro Current Sensors without needing a custom circuit board.
Allegro MicroSystems ACSEVB-CB5-SMT Evaluation Board
Evaluates Allegro current sensors in a lab environment without needing a custom circuit board.
Allegro MicroSystems ACSEVB-LC8-LZ6 Evaluation Board
Evaluates Allegro current sensors in a lab environment without needing a custom circuit board.
Allegro MicroSystems ACSEVB-MA16-LA16 Evaluation Board
Evaluates Allegro current sensors in a lab environment without needing a custom circuit board.
Clean Energy
Allegro MicroSystems Clean Energy
A solution to advance technology for a safer, more sustainable future.