AS5045

AS5045 is a 12bit contactless magnetic position sensor for accurate angular measurement rotary over a full turn of 360°. It is a system-on-chip, combining integrated Hall elements, analogue front end and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the centre of the chip, is required. The magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879° = 4096, positions per revolution. An internal voltage regulator allows the AS5045 to operate at either 3.3V or 5V supplies. The AS5045 is ideal for industrial applications like robotics, stepper motor control, RC servo control and replacement of high-end potentiometers.

• Highest reliability/durability in harsh environments, contactless absolute angle position measuring
• Great flexibility during assembly, user programmable zero position
• Operation safety, diagnostic modes for magnet detection and power supply loss
• Lower material cost (no magnetic shielding needed), immune to external magnetic stray fields
• Serial interface and pulse width modulated (PWM) output
• Failure detection mode for magnet placement monitoring and loss of power supply
• “Red-Yellow-Green” indicators display placement of magnet in Z-axis
• Serial read-out of multiple interconnected AS5045 devices using Daisy Chain mode
• Tolerant to magnet misalignment and airgap variations
• 16-pin SSOP package, wide temperature range from -40°Cto 125°C