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AS5040 Datasheet

Part NameAS5040(2004) AmsAG
austriamicrosystems AG AmsAG
Description10Bit 360° Programmable Magnetic Rotary Encoder
Other Doc.  lastest PDF   2006  
AS5040 image


General Description
The AS5040 is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device. It provides incremental output signals and the absolute angular position of a magnet that is placed either above or below the device.

Key Features
- Contact-less high resolution encoding over a full turn of
   360 degrees
- Flexible system due to user programmable incremental
   output modes:
   - 10, 9, 8 or 7 bit user programmable resolution
   - Quadrature A/B and index output signal
   - Single channel output and direction indication
   - U-V-W commutation signals for brush-less DC
- Absolute angular position mode:
   - 10-bit resolution providing 1024 absolute positions
      per 360 degrees (step size ~ 0.35 deg)
- Synchronous serial interface (SSI) output for absolute
   position data
- Pulse width modulated (PWM) output, duty cycle
   proportional to angle
- User programmable zero / index position
- Failure detection mode for magnet placement monitoring
- Rotational speeds up to 10,000 rpm (incremental output)
- Push button functionality detects movement of magnet
   in Z-axis
- Two supply voltages: 3.3 V or 5 V
- Wide temperature range: - 40°C to + 125°C
- Small package: SSOP 16 (5.3mm x 6.2mm)

- Industrial applications such as:
   - Motion control
   - Robotics
   - Brush-less 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 and potentiometers


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