AS5245 AB ams

AS5245 Programmable 360 Magnetic Angle Encoder with Absolute SSI and PWM Output The AS5245 is a contactless magnetic angle encoder for General Description accurate measurement up to 360 and includes two AS5145 devices in a punched stacked leadframe. It is a system-ON-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required. The magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of the magnets angular position with a resolution of 0.0879 = 4096 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. An internal voltage regulator allows operation of the AS5245 from 3.3V or 5.0V supplies. The AS5245 is fully automotive qualified to AEC-Q100, grade 0. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS5245, Programmable 360 Magnetic Angle Encoder with Absolute SSI and PWM Output are listed below: Figure 1: Added Value of Using AS5245 Benefits Features Contactless high resolution rotational position encoding No mechanical wear over a full turn of 360 High resolution absolute position sensing Two digital 12-bit absolute outputs Easy to use for motor control Quadrature A/B (10- or 12-bit) and Index output signal Adjustable zero position User programmable zero position Failure detection mode for magnet placement monitoring Tolerant to magnet misalignment and loss of power supply Red-Yellow-Green indicators display placement of magnet Usable for high speed applications in Z-axis Tolerant to airgap variations Tolerant to magnet misalignment and air gap variations ams Datasheet Page 1 v1-08 2015-Jun-29 Document FeedbackAS52 45 Gene ral Des c rip t ion Benefits Features Operates up to 150C ambient temperature Wide temperature range: - 40C to 150C Supports daisy chain application Unique Chip Identifier Fitting to automotive applications Fully automotive qualified to AEC-Q100, grade 0 Two sensors in one package Small package: QFN 32 LD (7x7) Applications The AS5245 is ideal for applications with an angular travel range from a few degrees up to a full turn of 360. The device is suitable for Automotive applications like Throttle position sensors Gas/brake pedal position sensing Headlight position control Contactless rotary position sensing Front panel rotary switches Replacement of potentiometer Page 2 ams Datasheet Document Feedback v1-08 2015-Jun-29