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AS5055A

Part Number	AS5055A
Manufacturer	ams
Description	Low Power 12-Bit Magnetic Position Sensor
Published	Feb 18, 2015
Detailed Description	AS5055A Low Power 12-Bit Magnetic Position Sensor General Description The AS5055A is a single-chip on-axis magnetic ro...
Datasheet	AS5055A PDF File

Overview

AS5055A Low Power 12-Bit Magnetic Position Sensor General Description The AS5055A is a single-chip on-axis magnetic rotary position sensor with low 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 -40ºC to 85ºC.
Ordering Information and Content Guide appear at end of datasheet.
Figure 1: Added Value of Using AS5055A Key Benefits & Features The benefits and features of AS5055A, Low Power 12-Bit Magnetic Position Sensor are listed below: Benefits Precise and reliable absolute angle measurement Very low power consumption High reliability sensing Synchronization between microcontroller and sensor Ideal for small and compact designs Industry-standard interface Features 12-bit absolute angle position indication 3μA current consumption in low power mode Immune to external magnetic stray fields Interrupt pin displays availability of new data QFN-16 4x4 package 3- or 4-wire SPI interface ams Datasheet [v2-06] 2014-Oct-14 Page 1 Document Feedback Figure 2: AS5055A Block Diagram AS5055A − GeneralDescription 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: VDD AS5055A Low Power Management VDDp WM SPI Hall Sensors Analog Front-End ADC ATAN (CORDIC) SS/ SCK MISO MOSI EN_INT/ INT/ AGC VSS Test Page 2 Document Feedback ams Datasheet [v2-06] 2014-Oct-14 NC NC NC INT/ NC WM NC VSS AS5055A − Pin Assignment Pin Assignment Pin Assignments (Top View): Package drawing is not to scale.
The AS5055A pin assignments are shown below.
Figure 3: Pin Diagram 16 1...

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