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Home » NEWEST Products » New by Manufacturer » ams » AS5145 12-Bit Programmable Magnetic Rotary Encoder - ams
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ams AS5145 12-Bit Programmable Magnetic Rotary Encoder

ams AS5145 12-Bit Programmable
Magnetic Rotary Encoder

ams AS5145 12-Bit Programmable Magnetic Rotary Encoder is a contact less magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees. 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 can be placed above or below the IC. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879º = 4096 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies.

Features
  • Contact less high resolution rotational position encoding over a full turn of 360 degrees
  • Two digital 12-bit absolute outputs:
  • Serial interface
  • Pulse width modulated (PWM) output
  • Three incremental outputs
  • Quadrature A/B/I (10 or 12 bit) and Index output signal (preprogrammed versions available AS5145A for 10-bit and AS5145B for 12-bit)
  • 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 Zaxis
  • Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode
  • Tolerant to magnet misalignment and gap variations
  • Wide temperature range: - 40ºC to +150ºC
  • Fully automotive qualified to AEC-Q100, grade 0
  • 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
  • Head Light Position Control
  • Torque Sensing
  • Valve Position Sensing
  • Replacement of High End Potentiometers
Block Diagram
Block Diagram
  • ams