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.

Key Benefits & Features
The benefits and features of AS5040, 10-Bit 360º Programmable Magnetic Rotary Encoder are listed below:

Benefits
• Highest reliability and durability
• Simple programming
• Multiple interfaces
• Ideal for motor applications
• Failure diagnostics
• Easy setup
• Great flexibility at a huge application area
• Fully automotive qualified
• Small form factor
• Robust environmental tolerance

Features
• Contactless high resolution rotational position encoding
   over a full turn of 360 degrees
• Simple user-programmable resolution, pole pairs and zero
   position
• Serial communication interface (SSI)
• 10-bit pulse width modulated (PWM) output
• Quadrature A/B and Index output signal
• Step/Direction and Index output signal
• 3-Phase commutation for brushless DC motors
• Rational speeds up to 30000 rpm
• Failure detection mode for magnet placement monitoring
   and loss of power supply
• Serial read-out of multiple interconnected devices using
   daisy chain mode
• Push button functionality detects movement of magnet in Z-axis
• AEC-Q100, grade 1
• SSOP 16 (5.3mm x 6.2mm)
• Wide temperature range: -40°C to 125°C

Applications
AS5040 is ideal for:
• 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