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austriamicro rolls new analog magnetic rotary encoder chip

Posted: 12 May 2005 ?? ?Print Version ?Bookmark and Share

Keywords:austriamicrosystems? austriamicro? rotary encoder ic? as5043?

The new absolute analog magnetic rotary encoder IC from austriamicrosystems offers a highly reliable, contactless solution to a variety of motion sensing applications in the industrial and automotive fields, where an analog position information is required.

The AS5043 provides an analog voltage proportional to the measured angle, in addition to a 10-bit digital position information. By combining adjustable angle range and analog output voltage range, a user can program the device to operate within a predefined, application-specific angle range, the company explained in its press release.

Depending on the angular range settings, the step size of the analog output may vary from 0.35 to 0.09 per step. In addition, the AS5043 can be selected by the user for optimized operation at either high speed or high accuracy. The daisy chain mode allows the connection of several devices in series over a two-wire bus.

The AS5043 operates at either 3.3V or 5V. This new product also offers all other distinctive features of austriamicro's magnetic rotary encoder IC family such as zero position programming or diagnostic features related to magnet mechanical position and magnetic field presence. As an additional safety feature, the device provides warning in case of a power loss.

"The AS5043 outperforms current motion sensing solutions, such as high end potentiometers, in terms of reliability and lifetime due to its contactless sensing method," said Ralf Kodritsch, the company's marketing manager for Sensors & Automation. "Furthermore, the high degree of device programmability, be it the adjustable angular and voltage range or the specific performance settings, makes the AS5043 superior to commonly used potentiometer solutions."

Matjaz Novak, marketing director at austriamicro, added, "The flexibility, small form factor and high reliability of the AS5043 make it attractive for use in a variety of industrial and automotive applications. With this device, we specifically aim to provide an alternative to analog motion sensing applications where changing to a digital solution would neither be technically or commercially attractive."

Rated for operation between the -40C to 125C temperature range, the AS5043 is housed in a Pb-free SSOP 16 (5.3-by-6.2mm) package. The AS5043 will be available for sampling next month (June 2005).




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