AS5147 Datasheet, PDF (1/35 Pages) ams AG – 14-Bit On-Axis Magnetic Rotary Position Sensor

AS5147
14-Bit On-Axis Magnetic Rotary
Position Sensor with 11-bit Binary
Incremental Pulse Count
General Description
The AS5147 is a high-resolution 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 AS5147 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 AS5147 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 AS5147 is available as a single die in a compact 14-pin
TSSOP package.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of Using the AS5147
Key Benefits & Features
The benefits and features of this device are listed below:
Benefits
Easy to use – saving costs on DSP
Good resolution for motor & position control
Versatile choice of the interface
Features
DAEC™ Dynamic angle error compensation
14-bit core resolution
Independent output interfaces: SPI, ABI, UVW, PWM
ams Datasheet: 2014-Jun-27 [v1-04]
AS5147 – 1