General Description
The AK7401 is a monolithic Hall-Effect sensor IC that specializes in detecting rotation angle. A contactless rotary position sensor is easily designed with a magnet.
The AK7401 is only sensitive to the magnetic flux density applied parallel to the IC surface. This is obtained through a magnetic concentrator which is mounted on the Hall-Effect elements. It is advantageous to accurate angular measurements against mechanical displacement.
To detect the rotation angle of a magnet, the AK7401 provides a 12-bit angle data. The angle data output is available via PWM and serial data protocols.

FEATUREs
□ 360° Contactless Angle Sensor
□ Angle Resolution : 12bit
□ Angle Linearity Error: ±0.95°@25°C
□ Over Voltage Protection: +16V @VDD pin
□ Reverse Voltage Protection: -16V @VDD, VSS pin
□ Automotive Temperature Range: -40°C to +150°C
□ AEC-Q100 Compliant
□ Output Interface: 3-wire SPI / PWM Push-Pull / PWM NMOS Open-Drain
□ User Programmable
   □ Zero degree point
   □ Magnet rotation direction: CCW or CW
   □ Angle data average: OFF, SPC (2 times average), HP (8 times average)
   □ PWM frequency: 250, 500 and 1000Hz
   □ PWM polarity
   □ OUT pin output type: Push-Pull / NMOS Open-Drain
□ Self-diagnostic Functions
   □ Mismatch detect function for triple-redundant EEPROM data
   □ Under and over supply voltage detect function
   □ Under and over magnetic flux density detect function
□ Environmental Friendly (RoHS Compliant)
   □ Lead free
   □ Halogen free

APPLICATIONs
   Steering wheel position sensor, Pedal position sensor, Throttle position sensor, EGR valve position sensor, Turbo valve position sensor, Motor shaft position sensor