14-Bit Dual-Die On-Axis Magnetic
Rotary Position Sensor with Up to
14-Bit Binary Incremental Pulse Count
The AS5147U/AS5247U is a high-resolution redundant rotary
position sensor for fast absolute angle measurement over a full
360-degree range. This position sensor is equipped with a
revolutionary integrated dynamic angle error compensation
(DAEC™) with almost 0 latency at higher rotational speed. For
increased signal quality at lower rotational speed, the dynamic
filter system (DFS™) reduces transition noise.
The robust design of the device suppresses the influence of any
homogenous external stray magnetic field. A standard 4-wire
SPI serial interface with a CRC protection allows a host
microcontroller to read 14-bit absolute angle position data
from the AS5147U/AS5247U and to program non-volatile
settings without a dedicated programmer.
Incremental movements are indicated on a set of ABI signals
with a maximum resolution of 16384 steps / 4096 pulses per
Brushless DC (BLDC) motors are controlled through a standard
UVW commutation interface with a programmable number of
pole pairs from 1 to 7. The absolute angle position is also
provided as PWM-encoded output signal.
The AS5147U/AS5247U supports embedded self-diagnostics
for fulfilling up to ASIL D in safety relevant applications.
The AS5247U is using the ams stacked die technology in a
TQFP-32 (7x7) package. The AS5147U sensor is available in a
Ordering Information and Content Guide appear at end of