AS5045-ASST Integrated Circuit Chip 12-Bit Programmable Magnetic Rotary Position Sensor

The AS5045 is a contactless magnetic position sensor 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.
The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879° = 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 AS5045 to operate at either 3.3 V or 5 V supplies. Ordering Information and Content Guide appear at end of datasheet.

Key Benefits & Features

The benefits and features of AS5045, 12-Bit Programmable Magnetic Rotary Position Sensor are listed below:
• Two digital 12-bit absolute outputs:
• 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
• Wide temperature range: - 40ºC to 125ºC
• Small Pb-free package: SSOP-16 (5.3mm x 6.2mm) Applications The AS5045 is ideal for industrial applications like
• Robotics,
• Stepper motor control,
• RC servo control and
• Replacement of high-end potentiometers.

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