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austriamicro rotary encoder IC measures 5.3-by-6.2mm

Posted: 16 Jun 2004 ?? ?Print Version ?Bookmark and Share

Keywords:austriamicrosystems ag? as5040? rotary encoder ic?

austriamicrosystems AG has disclosed that it has unveiled the world's smallest 10-bit multiple output magnetic rotary encoder IC.

Integrating field sensing Hall elements, analog front-end and digital signal processing in a single device, the AS5040 SoC is suitable for industrial applications including motion control, robotics, brushless dc motor commutation, power tools and a host of other applications.

The device can also be used in many automotive applications such as steering wheel and gas pedal position sensing, headlight control, power seat position indicators and transmission box encoders.

The AS5040 operates in a contactless system with a small magnet that is placed either above or below the device. It can detect 1,024 positions in a full 360 magnet turn.

"The AS5040 is an extremely flexible system solution with a minimum number of external components," said Ralf Kodritsch, marketing manager for Sensors & Automation at austriamicrosystems. "Its small physical dimensions and robustness makes the device a reliable and cost-effective alternative to optical encoders."

The encoder IC provides absolute, incremental and pulse width modulated digital output signals simultaneously. The user programmable index/zero position enables rotational speed measurement, while the synchronous serial interface output provides absolute position data. According to the company, the AS5040 can be configured to specific customer requirements by programming the integrated one-time programmable internal register. An internal voltage regulator allows the IC to operate at either 3.3V or 5V.

Rated for operation between the -40C to 125C temperature range, the AS5040 is priced at approximately $4 for 1,000-unit quantities. It is now available in SSOP 16 lead-free packaging.

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