Magnetic Rotary Encoder
(14-Bit Angular Position Sensor)
The AS5048 is an easy to use 360° angle position sensor with a
14-bit high resolution output.
The IC measures the absolute position of the magnet’s rotation
angle and consists of Hall sensors, analog digital converter and
digital signal processing. The absolute position information of
the magnet is directly accessible over a PWM output and can
be read out over a standard SPI or a high speed I²C interface.
AS5048A has a SPI interface, AS5048B I²C interface. Both devices
offer a PWM output.
The zero position can be programmed via SPI or I²C command.
This simplifies the assembly of the complete system because
the zero position of the magnet does not need to be
mechanically aligned. The sensor tolerates misalignment, air
gap variations, temperature variations and as well external
magnetic fields. This robustness and wide temperature range
(-40°C up to 150°C) of the AS5048 makes the IC ideal for rotation
angle sensing in harsh industrial and medical environments.
Several AS5048 ICs can be connected in daisy chain for serial
data read out. An internal voltage regulator allows the AS5048
to operate at either 3.3V or 5V supplies.
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Key Benefits & Features
The benefits and features of AS5048A/AS5048B, Magnetic
Rotary Encoder (14-Bit Angular Position Sensor) are listed
Added Value of Using AS5048
No external programmer needed
Easy to use
Low material costs (no shielding)
Standard SPI or I
C interface and PWM
14-bit resolution (0.0219°/LSB)
Zero position programmable via SPI or I
Immune to external magnetic stray fields