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PDF AS5055A Data sheet ( Hoja de datos )
| Número de pieza | AS5055A | |
| Descripción | Low Power 12-Bit Magnetic Position Sensor | |
| Fabricantes | ams | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS5055A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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AS5055A
Low Power 12-Bit Magnetic Position
Sensor
General Description
The AS5055A is a single-chip on-axis magnetic rotary position
sensor with low voltage and low power features.
It includes an integrated Hall element array, a high resolution
ADC and a smart power management controller.
The angle position, alarm bits and magnetic field information
are transmitted over a 3-wire or 4-wire SPI interface to the
microcontroller.
The AS5055A is available in a compact QFN 16-pin 4x4x0.85 mm
package and specified over an operating temperature of -40ºC
to 85ºC.
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of Using AS5055A
Key Benefits & Features
The benefits and features of AS5055A, Low Power 12-Bit
Magnetic Position Sensor are listed below:
Benefits
Precise and reliable absolute angle measurement
Very low power consumption
High reliability sensing
Synchronization between microcontroller and sensor
Ideal for small and compact designs
Industry-standard interface
Features
12-bit absolute angle position indication
3μA current consumption in low power mode
Immune to external magnetic stray fields
Interrupt pin displays availability of new data
QFN-16 4x4 package
3- or 4-wire SPI interface
ams Datasheet
[v2-06] 2014-Oct-14
Page 1
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1 page  
AS5055A − Absolute Maximum Ratings
Absolute Maximum Ratings
Figure 5:
Absolute Maximum Ratings
Stresses beyond those listed in “Absolute Maximum Ratings” on
page 5 may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at
these or any other conditions beyond those indicated in
“Electrical Characteristics” on page 6 is not implied. Exposure
to absolute maximum rating conditions for periods may affect
device reliability.
Symbol
Parameter
Min Max Units
Comments
Electrical Parameters
VDD DC supply voltage
-0.3 5.0
V
VDDp Peripheral supply voltage
-0.3 VDD+0.3 V
VIN Input pin voltage
-0.3 5.0
V
Iscr
Input current (latchup
immunity)
-100 100
mA Norm: JEDEC 78
Electrostatic Discharge
ESD Electrostatic discharge
±1 -
kV
Norm: MIL-STD-883 E method
3015
Continuous Power Dissipation
ΘJA Package thermal resistance
-
33.5
°C/W
Velocity=0, Multi Layer PCB;
JEDEC Standard Testboard
Pt Total power dissipation
36 mW
Temperature Ranges and Storage Conditions
Tstrg Storage temperature
-55 125
TBODY Package body temperature
260
°C
The reflow peak soldering
temperature (body temperature)
specified is in accordance with
IPC/JEDEC J-STD-020
°C
“Moisture/Reflow Sensitivity
Classification for Non-Hermetic
Solid State Surface Mount
Devices”.
The lead finish for Pb-free leaded
packages is matte tin (100% Sn).
Humidity non-condensing
5
85
%
MSL Moisture Sensitive Level
3
Represents a maximum floor life
time of 168h
ams Datasheet
[v2-06] 2014-Oct-14
Page 5
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5 Page 
AS5055A − Detailed Description
Figure 11:
Operating Modes
MOSI Read angle
CS/
INT/
Operating mode
Communication
mode
Normal operating mode
treadout
Read angle
Low power mode
Communication
mode
Note(s) and/or Footnote(s):
1. Even in low power mode, the power supply must be capable of supporting the active current (Ion) at least for maximum treadout,
until the AS5055A is suspended to low power mode.
Daisy Chain
The AS5055A allows a Daisy Chain configuration as shown in
Figure 21.
In this configuration the microcontroller can read multiple
AS5055A chips using only 5 wires.
ams Datasheet
[v2-06] 2014-Oct-14
Page 11
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS5055A.PDF ] | |
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