High precision angle position sensor offers excellent performance in automotive applications
(Technology News, 22 May 2008 )
austriamicrosystems has expanded its successful magnetic rotary encoder family with the AS5134. This innovative rotary encoder IC is fully qualified to AEC-Q100 and specifically designed for brushless DC sensing in automotive applications in an ambient temperature range up to 150°C.
With an 8.5-bit resolution, the AS5134 can recognize 360 positions within one 360° turn and is accessible with either a serial or a PWM (Pulse-Width Modulation) interface. In addition, there are three differently programmable incremental outputs available, one of which delivers a three-phase commutation signal for brushless DC motors. Another special feature is the programmability of 1 to 6 pole pairs. The AS5134 provides a "power saving mode" with a power consumption of less than 1.5mA and a fast start-up time to normal operation of less than 250µs.
Several features of the AS5134, including user-specific zero programming, a diagnostic function for correct positioning of the magnet, or the ability to recognize interruptions of the power supply are already standard in austriamicrosystems' entire encoder product family. The AS5134 additionally offers a "daisy chain" mode to read position data serially over a two wire bus.
