トランスミッション用途の高度な速度センサー
世界各国での燃料燃費および二酸化炭素排出量の削減に関する法律の強化に伴い、自動車メーカーは自動車の燃費効率の改善を迫られています。
こうした自動車業界の変化が、燃費効率をターゲットとしたトランスミッション技術の開発につながりました。トランスミッション用途の高度な速度センサー IC 開発のパイオニアである Allegro は、当社の革新的な逆バイアス GMR 技術により現在の燃費基準への対応を支援しています。
トランスミッション センサー性能の新しい標準を確立
Description goes here...
This shift in the automotive landscape has resulted in the development of transmission technologies that are targeted at fuel-efficiency. Allegro, a pioneer in developing advanced speed sensor ICs for transmission applications, is helping to meet today’s fuel-efficient standards with our innovative back-biased GMR technology.
Transmission Sensor ICs
Featuring advanced Hall and back-biased GMR technologies, our transmission sensors deliver exceptional vibration immunity, wide air gap performance, and stable output—even under harsh operating conditions. With ASIL-compliant products and integrated magnet and protection options, we’re setting a new benchmark for fuel-efficient, safety-critical transmission applicationsFeatured Products
ATS19480
Large Air Gap, GMR Speed Sensor IC for Gear Tooth Sensing
ATS19520
The ATS19520 is an advanced Hall-effect transmissions sensor that uses an integrated back-bias magnet to measure the speed and direction of rotating ferrous targets.
A19520
The A19520 is an advanced vibration-tolerant Hall-effect integrated circuit (IC) that measures the speed and direction of rotating targets, ideal for transmission applications.
トランスミッション センサー IC 選択ガイド
| ECAD | ||||
|---|---|---|---|---|
| ATS19480: Large Air Gap, GMR Speed Sensor IC for Gear Tooth Sensing | Speed | GMR | ||
| Two-Wire, Differential, Vibration-Resistant Sensor IC with Speed and Direction Output, enhanced dynamic and sudden airgap capabilities | Speed and Direction | Differential Hall | ||
| Large air gap, ASIL Compliant IC with integrated magnet for gear tooth sensing with dynamic air gap and vibration immunity | Speed and Direction | GMR | ||
| Fully integrated gear-tooth sensor that offers proven, highly advanced magnetically back-biased giant magnetoresistance (GMR) technology capable of sensing near or far air gap | Speed and Direction | GMR | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed and Direction | Hall | ||
| Differential, Hall Speed Only and Direction Output Selectable Speed Sensor IC with Diagnostics | Speed and Direction | Hall | ||
| Large Air Gap Vibration Immune GMR Transmission Speed and Direction Sensor IC | Speed and Direction | GMR | ||
| Large Air Gap Vibration Immune GMR Transmission Speed and Direction Sensor IC | Speed and Direction | GMR | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall | ||
| Vibration-Tolerant Hall Effect Transmission Speed and Direction Gear Tooth Sensor IC | Speed and Direction | Hall | ||
| True Zero-Speed, High Accuracy Gear Tooth Sensor IC | Speed | Hall | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall | ||
| Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall | ||
| Three-Wire, Differential, Vibration Resistant Sensor IC with Speed and Direction Output | Speed and Direction | Hall |
Part Number | Description | Direction Info | Technology |
|---|---|---|---|
| ATS19480 | ATS19480: Large Air Gap, GMR Speed Sensor IC for Gear Tooth Sensing | Speed | GMR |
| ATS19510 | Two-Wire, Differential, Vibration-Resistant Sensor IC with Speed and Direction Output, enhanced dynamic and sudden airgap capabilities | Speed and Direction | Differential Hall |
| ATS19580 | Large air gap, ASIL Compliant IC with integrated magnet for gear tooth sensing with dynamic air gap and vibration immunity | Speed and Direction | GMR |
| ATS19581 | Fully integrated gear-tooth sensor that offers proven, highly advanced magnetically back-biased giant magnetoresistance (GMR) technology capable of sensing near or far air gap | Speed and Direction | GMR |
| A1667 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall |
| A1684 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall |
| A19420 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed | Hall |
| A19520 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap. Magnetic encoder and gear tooth sensing solutions. | Speed and Direction | Hall |
| A19530 | Differential, Hall Speed Only and Direction Output Selectable Speed Sensor IC with Diagnostics | Speed and Direction | Hall |
| A19570 | Large Air Gap Vibration Immune GMR Transmission Speed and Direction Sensor IC | Speed and Direction | GMR |
| A19571 | Large Air Gap Vibration Immune GMR Transmission Speed and Direction Sensor IC | Speed and Direction | GMR |
| ATS19420 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall |
| ATS19520 | Vibration-Tolerant Hall Effect Transmission Speed and Direction Gear Tooth Sensor IC | Speed and Direction | Hall |
| ATS667 | True Zero-Speed, High Accuracy Gear Tooth Sensor IC | Speed | Hall |
| ATS668 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall |
| ATS684 | Dynamic calibration and running mode algorithms for highly accurate duty cycle performance over air gap for gear tooth sensing solutions. | Speed | Hall |
| ATS693 | Three-Wire, Differential, Vibration Resistant Sensor IC with Speed and Direction Output | Speed and Direction | Hall |
Selection & Solution Guides
Allegro Product Selection Guide (PDF)
Documentation & Resources
Application Note
Transmission Gear Tooth Sensing
AN296221 - In this application note learn how our industry-leading, time-proven algorithms included on our transmission ICs have been designed to handle the most stringent application conditions.
Application Note
Giant Magnetoresistance versus Hall-effect: A Comparison of Technologies for Speed Sensor Applications
Allegro MicroSystems giant magnetoresistance (GMR) effect technology offerings build on lessons learned from experience with Hall-effect devices to enable new options for speed sensing system design.
Application Note
Effect of Ring Magnet Dimensions on Differential Speed Sensor Performance
AN296251 - In this application note, we describe how ring magnet dimensions affect speed sensor performance is given.
Video
Allegro Differential Speed Sensor System Solutions
Seth Prentice, Strategic Marketing Manager for Allegro MicroSystems Speed Sensor IC group, discusses IC solutions for designing speed sensing applications including automotive transmissions, washing machine drum speeds, and fork lift positioning requiring reliable consistent output signals.
Brochure
Brochure: State-Of-The-Art Back-Biased GMR Speed Sensing
Allegro pioneers the first back-biased GMR Sensor with 50% larger air gaps. This larger air gap operation enables smaller and lighter transmissions that achieve reduced fuel consumption to help meet today's fuel economy standards.
Application Note
A19520/ATS19520 Sensor IC Outputs Under Vibration Conditions
AN296232 - This application note details the Allegro A19520 and ATS19520 sensor IC outputs for general target and sensor vibration scenarios.
Application Note
Speed Sensor Protocols
AN296246 - This application note provides a detailed description of commonly used output protocols implemented in speed sensors. It also lists the benefits and drawbacks of each and provides information on the safety mechanisms these protocols offer to achieve compliance with the latest automotive safety standards.
Application Note
Methods and Validation of Stray Magnetic Field Mitigation in Magnetic Speed Sensor ICs
AN296250 - This document provides an overview of the phenomena of stray magnetic fields, its various sources, solutions developed to minimize its effects, and product proposals tolerant to stray field perturbations.
Application Note
Understanding Input Signal Variation in Sensor ICs with SolidSpeed Digital Architecture
AN29622 - This application note is to be used to aid the understanding of these datasheet line items. This specification change can be seen in the A19302 and A19571 datasheets and will continue to be used in many parts that use this technology moving forward
Application Note
Fundamental Properties of Speed Sensors
The aim of this application note is to provide a solid foundation for understanding and comparing the fundamental properties of speed sensors that are valid not only for Allegro products but for speed sensors in general.
Application Note
Target Design for Hall Transmission Sensors
AN296178 - This application note details the impact of multiple target design parameters on the maximum air gap achievable with Allegro’s ATS692LSH and ATS19520LSN transmission sensors, allowing for measurement of speed and direction of rotating targets.
Features include:
- Front and back-biased solutions for magnetic encoder or ferrous target sensing
- Two-and three-wire output protocols supporting speed, direction, and ASIL error reporting (optional)
- Integrated solutions include IC, magnet (optional), and EMC protection component(s) in a single overmolded miniature package
- Differential sensing offers inherent common-mode stray field immunity
- Low jitter for high edge accuracy
- Flexible orientation GMR technology for xMR or Hall replacement and application installation flexibility
- EEPROM enables factory traceability throughout the production process