The AS5045 is a 12-bit resolution device that’s part of an expanding family of magnetic rotary encoder ICs. The device provides absolute angle information in a digital format. It targets motion-sensing applications in the industrial and automotive markets, where a resolution below 0.1° of angle is required.

You can continuously access a serial digital output and PWM output at the same time. The angular position information is provided in the form of a serial datastream and a PWM signal with a resolution of 4,096 positions per revolution (0.09° per step). Using its mode selector pin, the device can be adapted to meet the requirements of high-precision and high-speed applications.

The AS5045 offers user-programmable zero-position setting and diagnostic features, as well as the option to cascade several devices in a daisy chain configuration. The device is immune to magnet misalignment, air gap, and ambient temperature variations. The AS5045 operates at either 3.3 or 5 V. The operating temperature ranges from –40° to 125°C. The AS5045 is available in a lead-free SSOP16 (5.3 mm × 6.2 mm) package.

The AS5045 costs $5 in 1,000-piece quantities.

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