Factsheet

Small & Low Power
www.ams.com/AS5050A
www.ams.com/AS5055A
AS5050A – Smallest 10-bit Magnetic Rotary Position Sensor
AS5055A – Smallest 12-bit Magnetic Rotary Position Sensor
-High resolution: 10-bit / 12-bit
-Low power consumption – ideal for battery powered devices
- Immune to external magnetic stray fields
-Small size: 4 x 4mm QFN package
We provide innovative
analog solutions to
the most challenging
applications in sensor
and sensor interfaces,
power management,
and wireless.
General Description
The AS5050A/AS5055A is a single-chip magnetic rotary position sensor IC with low voltage and low power features. It includes 4 integrated Hall elements, a high resolution ADC
and a smart power management controller. The angle position, alarm bits and magnetic field information are transmitted over a standard 3-wire or 4-wire SPI interface to the
host processor. The AS5050A/AS5055A is available in a small QFN 16-pin 4x4x0.85mm package and specified over an operating temperature of -40 to +85°C.
Applications
Features
- RC-Servo motor control
-Robotics
- Rotary knobs
- Rotary Position Sensor for battery operated portable devices
- 10-bit (AS5050A) / 12-bit (AS5055A) resolution
- 3μA current consumption in low power mode
- Immune to external magnetic stray fields
- Interrupt indication for availability of new data
- QFN-16 4x4 package
- SPI interface, 3 or 4 wire
AS5050A/AS5055A Block Diagram
Benefits
VDD
VDDp
WM
AS5050A
AS5055A
SS/
SPI
SCK
MISO
Low Power Management
- Precise and reliable absolute angle measurement
- Very low power consumption
- High reliability sensing in harsh environments
- Synchronization between microcontroller and sensor
- Ideal for small and compact designs
- Easy to use with SPI interface
MOSI
EN_INT/
Analog
Front-End
Hall Sensors
ADC
ATAN
(CORDIC)
INT/
AGC
VSS
Test
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[email protected]
© 03/2014 by ams
Subject to change without notice
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