Description

The AS5263 is a fail-safe, contactless magnetic angle position sensor for accurate angular measurement over a full turn of 360º. Two independent chips in one package, which are 100% identical and electrically isolated from each others guarantee highest redundancy for safety critical applications.

A sub range can be programmed for both internal sensors independently from each other to achieve the best resolution for the application.

It is a system-on-chip combining integrated Hall elements, analog front-end, digital signal processing and a powerful automotive feature package in a dual die device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required. The magnet may be placed above or below the IC.

The absolute angle measurement provides instant indication of the magnets angular position with a programming resolution of 0.022 º = 16384 positions per revolution. This angular data is available as a 12-bit PWM or analog output signal. An internal voltage regulator with overvoltage protection and reverse polarity protection down to -18V allows the AS5263 to operate in automotive applications up to a voltage of 27V. Programmability over the output pin s reduces the number of pins on the application connector

Key Features

•  Full redundant, 360º contactless high resolution angular position encoding
• Insensitive to external magnetic stray fiels, no shielding necassary
•  User programmable starting and end point of the application range
•  User programmable clamping levels and programming of the transition point
•  Powerful analog output
•  Fully short circuit protected
•  High driving capability for resistive and capacitive loads
•  Wide temperature range: -40ºC to +150ºC
•  Broken GND and VDD detection over a wide range of different load conditions
•  Simplified programming due to provided programming hardware and software
•  Failure detection mode for magnet placement monitoring and loss of power supply
•  Indication of high voltage condition
•  Tolerant to magnet misalignment and airgap variations
•  Thin 32-pin QFN (7mm x 7mm) package
•  Fully AEC-Q100 grade 0 qualified

Block diagram for AS5263 Rotary Automotive Encoder