austriamicrosystems Introduces Low-cost 8-bit Incremental Magnetic Rotary Encoder IC

  • April 14, 2005
  • austriamicrosystems AG
  • News
RALEIGH, N.C. (April 14, 2005) – austriamicrosystems announces the introduction of the AS5035, an 8-bit incremental magnetic rotary encoder for cost-sensitive industrial and automotive applications. The device is particularly well suited for use in human-machine interface (HMI) applications, such as front panel switches, or as an alternative to optical encoder-based applications where dust or other particles could severely diminish the reliability and accuracy of the system operation.The AS5035 provides incremental quadrature A/B output signals and an index output signal. The index signal represents a mechanical reference point, called the zero position, which can be programmed by the user at the system assembly stage. Operation safety is ensured by continuous monitoring of the magnet presence and the optimal magnet position in the system. "The AS5035 is an ideal encoder solution for cost-sensitive applications which have up until now been using optical encoder solutions. Especially in harsh environments, magnetic encoders provide significant advantages over optical encoders, such as during operation in dusty environments or at high temperatures,” said Ralf Kodritsch, marketing manager for Sensors & Automation at austriamicrosystems. "Another product feature which our customers highly value in our magnetic encoder products is the ability to program the zero position at the system assembly stage. For example, the user can simply adjust each individual knob reference position in a front panel application at a final manufacturing step.”The AS5035 provides 64 pulses per revolution on each of the two quadrature output channels, which equals a resolution of 2.8 degrees per step over a full turn of 360 degrees. Operation safety is ensured by a failure detection feature, which monitors the magnet’s placement during the operation. In case of a missing or loose magnet, the device instantly provides a warning signal. The IC operates at rotational speeds up to 10,000 revolutions per minute, without missing any incremental pulses. The zero position can be programmed by the user. The AS5035 operates at either 3.3 V or 5 V. The operating temperature ranges from –40°C to +125°C. The AS5035 is available in a lead-free SSOP 16 (5.3mm x 6.2mm) package. AS5035 will be available for sampling in May. About austriamicrosystemsaustriamicrosystems is a leading designer and manufacturer of high performance analog ICs, combining more than 20 years of analog design capabilities and system know-how with its own state-of-the-art manufacturing and test facilities. austriamicrosystems leverages its expertise in low power and high accuracy to provide industry-leading customized and standard analog products. Operating worldwide with more than 800 employees, austriamicrosystems focuses on the areas of power management, sensors & sensor interfaces, portable audio and car access through its business units Communications, Industry & Medical, Automotive and Full Service Foundry. austriamicrosystems is listed on the SWX Swiss Exchange in Zurich (ticker symbol: AMS). For more information visit

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