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AS5403D 데이터시트 PDF




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부품번호 AS5403D 기능
기능 3D Hall Position Sensor
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AS5403D 데이터시트, 핀배열, 회로
General Description
AS5403A/D/E
3D Hall Position Sensor for Linear and
Off-Axis Applications
The AS5403 can measure magnetic fields components in all
three dimensions and converts the magnetic field information
into absolute position information.
Only a simple 2-pole magnet is required as the magnetic field
source.
Using two 3D-Hall cells allows absolute (single pixel) as well as
differential (double pixel) 3D magnetic field measurement.
The differential measurement makes the AS5403 ideal for use
in rough automotive position sensing applications that include
not only dust, dirt or moisture but also unwanted magnetic
stray fields.
All the signal conditioning, including compensation of
temperature effects as well as linearization of the output is
included in the IC.
The absolute position information of the magnet is directly
accessible over a SPI interface and a programmable PWM or
analog output. The build in diagnostic functions makes the
AS5403 suitable for safety critical applications.
The AS5403 is available in a 14-pin TSSOP package and is
qualified according AEC-Q100 for an ambient temperature
range from -40°C to 150°C. It operates at a supply voltage of 5V
±10%.
The programming of the AS5403 is done over the single wire
UART interface.
The AS5403 is overvoltage protected up to 18V on the supply
and output pins. In addition the supply pins are reverse polarity
protected up to -18V.
Ordering Information and Content Guide appear at end of
datasheet.
ams Datasheet
[v1-06] 2015-Aug-28
Page 1
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AS5403D pdf, 반도체, 판매, 대치품
Figure 4:
AS5403A/D/E Block Diagram
AS5403A/D/E− GeneralDescription
Block Diagram
The functional blocks of this device for reference are
shown below:
AS5403
VDD3V
Temperature
Sensor
VDD LDO
Diagnostics
SPI
E²PROM
3DHall X
Cell Y
#0
Z
M
U
X
3DHall X
ADC
signal
conditioning
Bi
Bj
ATAN
(CORDIC)
Linearization
and
Output setting
DAC
PWM
Cell Y
#1 Z
GND
SCS
SCLK
SDO
SDI
OUT
DSW
3D Hall pixels:
MUX:
ADC:
Signal conditioning:
Bi/Bj:
ATAN:
Linearization:
Temperature:
PWM interface:
SPI interface:
E²PROM:
Diagnostics:
The AS5403 contains two 3D Hall pixels, spaced 2.5mm apart.
The multiplexer pre-selects depending on the AS5403 variant and chosen mode
two/four magnetic components.
The Sigma-Delta ADC samples the Hall sensors signals selected by the MUX. The
sampling of the sensors is done sequentially.
This block includes offset and temperature compensation as well as amplitude
matching.
Preparation of the input signal for the ATAN calculation. Inversion and offset
adjustment functions.
Angle calculation.
A 33-point linearization of the ATAN output. In addition output settings for gain an
clamping.
An on-chip temperature sensor is available. It can be read over the SPI interface. This
sensor is also used for signal conditioning
The linearized measurement data is available over a single pin in the form of a pulse
width modulated (PWM) signal.
A bi-directional SPI interface allows communication with the chip, including reading
measurement data, E²PROM contents or writing configuration data.
The on-chip E²PROM contains the configuration data of the chip.
Monitor functions on different blocks to check the correctness of the internal signals.
Page 4
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ams Datasheet
[v1-06] 2015-Aug-28

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AS5403D 전자부품, 판매, 대치품
AS5403A/D/E − Electrical Characteristics
Electrical Characteristics
Figure 7:
Absolute Maximum Ratings
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 Operating
Conditions is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device
reliability.
Symbol
Parameter
Min Max
VDD DC supply voltage at pin VDD -18
18
OUT_OV Voltage at pin OUT and DSW -0.3
18
VREG DC voltage at VDD3 pin
-0.3 5
VDIG
DC voltage at digital input
and output pins
-0.3 5
Iscr
Input current
(latchup immunity)
-100 100
ESD Electrostatic discharge
±2
EEPcyc EEPROM endurance cycles
100
Tstrg Storage temperature
-55 150
Unit
V
V
V
V
Comments
mA AEC-Q100-004
kV AEC-Q100-002
cycles
A part of EEPROM is reserved for
factory settings. This part is
pre-programmed and locked by
ams.
The customer area of EEPROM can
be programmed up to 100 times at
Tamb=27deg.
EEPROM is intended to be
programmed at 0h only in the
customer production line and shall
not be reprogrammed during
operation in the field.
°C Min – 67°F; Max 302°F
ams Datasheet
[v1-06] 2015-Aug-28
Page 7
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