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PDF AS5147P Data sheet ( Hoja de datos )
| Número de pieza | AS5147P | |
| Descripción | 14-Bit On-Axis Magnetic Rotary Position Sensor | |
| Fabricantes | ams | |
| Logotipo |  |
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General Description
Figure 1:
Added Value of Using the AS5147P
Benefits
High speed application
Easy to use – saving costs on DSP
AS5147P
14-Bit On-Axis Magnetic Rotary
Position Sensor with 12-Bit Binary
Incremental Pulse Count and for
28krpm High Speed Capability
The AS5147P is a high-resolution rotary position sensor for high
speed (up to 28krpm) 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 AS5147P 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 4096 steps / 1024 pulses per
revolution. The resolution of ABI signal is programmable to
4096 steps / 1024 pulses per revolution, 2048steps / 512 pulses
per revolution or 1024steps / 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 AS5147P 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 AS5147P is available as a single die in a compact 14-pin
TSSOP package.
Ordering Information and Content Guide appear at end of
datasheet.
Key Benefits & Features
The benefits and features of this device are listed below:
Features
Up to 28krpm
DAEC™ Dynamic angle error compensation
ams Datasheet
[v1-01] 2015-May-12
Page 1
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1 page  
AS5147P − Absolute Maximum Ratings
Absolute Maximum Ratings
Figure 5:
Absolute Maximum Ratings
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. These are stress
ratings only. Functional operation of the device at these or any
other conditions beyond those indicated under Electrical
Characteristics is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device
reliability.
Symbol
Parameter
Min Max Units
Note
VDD5 DC supply voltage at VDD pin -0.3
7.0
V
VDD3
DC supply voltage at VDD3V3
pin
-0.3
5.0
V
VSS DC supply voltage at GND pin -0.3
0.3
V
Vin Input pin voltage
VDD+0.3 V
Iscr
Input current
(latch-up immunity)
-100 100
mA Norm: AEC-Q100-004
ESD Electrostatic discharge
±2 kV Norm: AEC-Q100-002
Pt
Total power dissipation
(all supplies and outputs)
150 mW
Ta5V0 Ambient temperature 5V0
-40 150
°C
In the 5.0V power supply mode
only
Ta3V3 Ambient temperature 3V3
-40 125
°C
In the 3.3V power supply mode
if NOISESET = 0
TaProg Programming Temperature
5
45
°C
Programming @
Roomtemperature (25°C ± 20°C)
Tstrg Storage temperature
-55 150
Tbody Package body temperature
260
RHNC
Relative Humidity
non-condensing
5 85
°C
°C Norm: IPC/JEDEC J-STD-020
%
MSL Moisture sensitivity level
3
Represents a maximum floor
lifetime of 168h
ams Datasheet
[v1-01] 2015-May-12
Page 5
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5 Page 
AS5147P − Detailed Description
Dynamic Angle Error Compensation
The AS5147P uses 4 integrated Hall sensors which produce a
voltage proportional to the orthogonal component of the
magnetic field to the die. These voltage signals are amplified,
filtered, and converted into the digital domain to allow the
CORDIC digital block to calculate the angle of the magnetic
vector. Propagation of these signals through the analog
front-end and digital back-end generates a fixed delay between
the time of measurement and the availability of the measured
angle at the outputs. This latency generates a dynamic angle
error represented by the product of the angular speed (ω)and
the system propagation delay (tdelay):
(EQ1) DAE = ω x tdelay
The dynamic angle compensation block calculates the current
magnet rotation speed (ω) and multiplies it with the system
propagation delay (tdelay) to determine the correction angle to
reduce this error. At constant speed, the residual system
propagation delay is tdelay_DAEC.
The angle represented on the PWM interface is not
compensated by the Dynamic Angle Error Compensation
algorithm. it is also possible to disable the Dynamic Angle Error
Compensation with the DAECDIS setting. Disabling the
Dynamic Angle Error Compensation gives a noise benefit of
0.016 degree rms.This setting can be advantageous for low
speed (under 100 RPM) respectively static positioning
applications.
ams Datasheet
[v1-01] 2015-May-12
Page 11
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS5147P.PDF ] | |
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