Unterpremstaetten, Austriaaustriamicrosystems has expanded its magnetic rotary encoder family with the AS5134, which 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-degree turn and is accessible with either a serial or a PWM 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.
Due to the wide ambient temperature range of -40°C to 150°C, no additional temperature compensation and calibration of the device is required. The AS5134 is available in a lead-free SSOP-20 package.
Pricing: $2.94 each in 1,000-unit quantities.
Datasheet: Click here.