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Part Name  

AS5040ASST Datasheet

Part Name Description Manufacturer
AS5040ASST 10 BIT 360° PROGRAMMABLE MAGNETIC ROTARY ENCODER AmsAG
austriamicrosystems AG AmsAG
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General Description
The AS5040 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.
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.

Benefits
- Complete system-on-chip
- Flexible system solution provides absolute, PWM
   and incremental outputs simultaneously
- Ideal for applications in harsh environments due to
   contactless position sensing
- Tolerant to magnet misalignment and airgap
   variations
- No temperature compensation necessary
- No calibration required

Key Features
- Contactless high resolution rotational position
   encoding over a full turn of 360 degrees
- Two digital 10bit absolute outputs:
   - Serial interface and
   - Pulse width modulated (PWM) output
- Three incremental output modes:
   - Quadrature A/B and Index output signal
   - Step / Direction and Index output signal
   - 3-phase commutation for brushless DC motors
   - 10, 9, 8 or 7 bit user programmable resolution
- User programmable zero / index position
- Failure detection mode for magnet placement
   monitoring and loss of power supply
- Rotational speeds up to 10,000 rpm
- Push button functionality detects movement of
   magnet in Z-axis
- Serial read-out of multiple interconnected AS5040
   devices using Daisy Chain mode
- Wide temperature range: - 40°C to + 125°C
- Fully automotive qualified to AEC-Q100, grade 1
- Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)

Applications
- Industrial applications:
   - Contactless rotary position sensing
   - Robotics
   - Brushless DC motor commutation
   - Power tools
- Automotive applications:
   - Steering wheel position sensing
   - Gas pedal position sensing
   - Transmission gearbox encoder
   - Headlight position control
   - Power seat position indicator
- Office equipment: printers, scanners, copiers
- Replacement of optical encoders
- Front panel rotary switches
- Replacement of potentiometers

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