General Description
The AS5045 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.
Key Features
 Contactless high resolution rotational position encoding over a full turn of 360 degrees
 Two digital 12bit absolute outputs:
- Serial interface and
- Pulse width modulated (PWM) output
 User programmable zero position
 Failure detection mode for magnet placement monitoring and loss of power supply
 “red-yellow-green” indicators display placement of magnet in Z-axis
 Serial read-out of multiple interconnected AS5045 devices using Daisy Chain mode
 Tolerant to magnet misalignment and airgap variations
 Wide temperature range: - 40°C to + 125°C
 Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)
Applications
 Industrial applications:
- Contactless rotary position sensing
- Robotics
 Automotive applications:
- Steering wheel position sensing
- Transmission gearbox encoder
- Headlight position control
- Torque sensing
- Valve position sensing
 Replacement of high end potentiometers
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