AS5055A-BQFT ams

AS5055A Low Power 12-Bit Magnetic Position Sensor The AS5055A is a single-chip magnetic position sensor with low General Description voltage and low power features. It includes an integrated Hall element array, a high resolution ADC and a smart power management controller. The angle position, alarm bits and magnetic field information are transmitted over a 3-wire or 4-wire SPI interface to the microcontroller. The AS5055A is available in a compact QFN 16-pin 4x4x0.85 mm package and specified over an operating temperature of -40C to 85C. For further understanding in regards to the contents of the datasheet, please refer to the Reference Guide located at the end of the document. Key Benefits & Features The benefits and features of AS5055A, Low Power 12-Bit Magnetic Position Sensor are listed below: Figure 1: Added Value of Using AS5055A Benefits Features Precise and reliable absolute angle measurement 12-bit absolute angle position indication Very low power consumption 3A current consumption in low power mode High reliability sensing Immune to external magnetic stray fields Synchronisation between microcontroller and sensor Interrupt pin displays availability of new data Ideal for small and compact designs QFN-16 4x4 package Industry-standard interface 3- or 4-wire SPI interface ams Datasheet, Confidential: 2014-Mar 2-01 AS5055A 1G e n e ral D e sc rip t ion Applications This sensor is optimized for a broad range of demanding applications including: Servo motor control Battery operated systems Robotics Block Diagram The functional blocks of this sensor are shown below: Figure 2: AS5055A Block Diagram VDD VDDp WM AS5055A SS/ SCK SPI MISO Low Power Management MOSI EN INT/ Analog Hall Sensors Front-End ATAN INT/ ADC (CORDIC) AGC VSS Test AS5055A 2 ams Datasheet, Confidential: 2014-Mar 2-01