Magnetic Rotary Encoder IC comes in 4 x 4 mm QFN package.April 16, 2010 -
Targeted for low-power battery operated applications, AS5055 performs all angle calculations as well as automatic power-up and power-down on-chip. It integrates 4 Hall sensor elements, one 12-bit angle encoder, smart power management controller, and 3- or 4-wire SPI communications interface. Low power device only draws current when new measurement is requested by host controller. Operating from 3.3 V power supply, IC operates at ambient temperatures of -20 to +85°C.
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Original Press release
austriamicrosystems AG
8141 Schloß
Premstatten, ,
Austria
austriamicrosystems Announces New Low-Power High-Resolution Magnetic Rotary Encoder IC for Battery Powered Applications
The AS5055 features smallest size, simple hook-up, automatic wakeup
Unterpremstaetten, Austria - austriamicrosystems (SIX: AMS), a leading designer and manufacturer of high-performance analog ICs, today announced the AS5055 magnetic rotary encoder with automatic power-down and wake-up modes. Targeted for low-power battery operated applications such as robotics, the AS5055 is also well suited for other position sensing applications requiring small size and high resolution. The AS5055 integrates four Hall sensor elements, a 12-bit angle encoder, a smart power management controller and an easy-to-use 3- or 4-wire SPI communications interface.
Housed in a small 4x4 mm QFN package, the low-power encoder is the smallest device in its class. Depending on the readout rate, the current consumption is reduced to µA-levels, e.g. 50 µA average at 10 measurements per second - the lowest in the industry.
Only a few passive components and a magnet rotating above the chip are necessary to assemble an encoder system. The AS5055 performs all angle calculations as well as automatic power-up and power-down on-chip. It only draws current when a new measurement is requested by the host controller. As soon as a measurement is completed, the AS5055 automatically powers down.
Josef Janisch, product marketing manager at austriamicrosystems, stated, "This is the industry's smallest 12-bit magnetic rotary encoder available. It also offers the lowest power consumption due to automatic shutdown and wake-up modes. This is ideal for battery powered equipment, as it extends battery life. In addition, the industry standard SPI interface offers an easy-to-use connection to common microcontrollers."
The AS5055 is available in a tiny 4x4 mm 16-pin QFN package, operates from a 3.3 volt power supply, and has an ambient operating temperature range of -20 to +85°C.
Price & Availability
Available now, the price for the AS5055 is $2.69 in 10,000-piece quantities.
Technical Support
A demonstration board for the AS5055 magnetic encoder is available. Contact austriamicrosystems for price. For further information on the AS5055 or to request samples, please visit www.austriamicrosystems.com/AS5055
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