Home > Products > austriamicrosystems announces new low-power high-resolution magnetic rotary encoder IC for battery powered applications

Mixed Signal/Analog

austriamicrosystems announces new low-power high-resolution magnetic rotary encoder IC for battery powered applications

8th April 2010

ams (formerly austriamicrosystems AG)

ES Admin

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Datasheet

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. 50µA 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 the encoder systems. 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 the acquisition of a measurement is completed, the AS5055 automatically suspends to power-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 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.