AS5247 Datasheet, PDF (1/37 Pages) ams AG – 14-bit Dual-die On-Axis Magnetic Rotary Position Sensor

AS5247
14-bit Dual-die On-Axis Magnetic
Rotary Position Sensor with 11-bit
Binary Incremental Pulse Count
General Description
The AS5247 is a high-resolution redundant rotary position
sensor for fast absolute angle measurement over a full
360-degree range. This new position sensor is equipped with a
revolutionary integrated dynamic angle error compensation
(DAEC™) with almost 0 latency.
The robust design of the device suppresses the influence of any
homogenous external stray magnetic field. A standard 4-wire
SPI serial interface allows a host microcontroller to read 14-bit
absolute angle position data from the AS5247 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 2048 steps / 512 pulses per
revolution. The resolution of the ABI signal is programmable to
1024 steps / 256 pulses per revolution.
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 AS5247 supports embedded self-diagnostics including
magnetic field strength too high, magnetic field strength too
low or lost magnet, and other related diagnostic features.
The product is defined as SEooC (Safety Element out of Context)
according ISO26262 including FMEDA, safety manual and third
party qualification.
The AS5247 is available as a dual die in a compact MLF-40 7x7
package.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of Using the AS5247
Key Benefits & Features
The benefits and features of AS5247, 14-bit Dual-die On-Axis
Magnetic Rotary Position Sensor with 11-bit Binary Incremental
Pulse Count are listed below:
Benefits
Easy to use – saving costs on DSP
Good resolution for motor & position control
Features
DAEC™ Dynamic angle error compensation
14-bit core resolution
ams Datasheet: 2014-Jun-20 [v1-02]
AS5247 – 1