Based on the anisotropic magneto resistive (AMR) effect, the NSM41XX detect the rotational speed of a ferromagnetic/magnetic encoder wheel. This design provides speed information over a wide range of rotational frequence, air gap and temperature. It provides the speed information via a current switching protocol: PWM/Standard/AK protocol at the supply pin by current modulation. Diagnostic features are implemented to report the internal fault.
With internal capacitor and high ESD performance, in harsh automotive environments, NSM41XX can provide state of art EMC performance.
Product Features
• System in package, application-specific integrated circuit, sensor and capacitor.
• AK/PWM/Standard protocol can be selected by part number
• Large range of operating terminal voltage
• Automotive qualified in accordance with AEC-Q100 grade0
• Vibration suppression
• ASIL-B(D) support for safety critical applications according to ISO26262
• High air gap performance
• Immunity against external dynamic fields
• Operation temperature: -40OC~150OC
• NOVOSENSE patented AMR wheel speed solution
Application
• ABS/ESC/ESP system
• iTPMS system
Functional Block Diagram
For more product information, please contact us.
