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AS5304 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AS5304
기능 Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection
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AS5304 데이터시트, 핀배열, 회로
AS5304 / AS5306
Integrated Hall ICs for
Linear and Off-Axis Rotary Motion Detection
www.DataSheet4U.com
PRELIMINARY DATA SHEET
1 General Description
The AS5304/AS5306 are single-chip IC’s with integrated
Hall elements for measuring linear or rotary motion using
multi-pole magnetic strips or rings.
This allows the usage of the AS5304/AS5306 in
applications where the Sensor IC cannot be mounted at the
end of a rotating device (e.g. at hollow shafts). Instead, the
AS5304/AS5306 are mounted off-axis underneath a multi-
pole magnetized ring or strip and provides a quadrature
incremental output with 40 pulses per pole period at
speeds of up to 20 meters/sec (AS5304) or 12 meters/sec
(AS5306).
A single index pulse is generated once for every pole pair
at the Index output.
Using, for example, a 32pole-pair magnetic ring, the
AS5304/AS5306 can provide a resolution of 1280
pulses/rev, which is equivalent to 5120 positions/rev or
12.3bit. The maximum speed at this configuration is 9375
rpm.
The pole pair length is 4mm (2mm north pole / 2mm south
pole) for the AS5304, and 2.4mm (1.2mm north pole /
1.2mm south pole) for the AS5306. The chip accepts a
magnetic field strength down to 5mT (peak).
Both chips are available with push-pull outputs
(AS530xA) or with open drain outputs (AS530xB).
The AS5304/AS5306 are available in a small 20-pin
TSSOP package and specified for an operating ambient
temperature of -40° to +125°C.
2 Benefits
Complete system-on-chip
High reliability due to non-contact sensing
Suitable for the use in harsh environments
Robust against external magnetic stray fields
3 Key Features
High speed, up to 20m/s (AS5304)
12m/s (AS5306)
Magnetic pole pair length: 4mm (AS5304) or
2.4mm (AS5306)
Resolution: 25µm (AS5304) or 15µm (AS5306)
40 pulses / 160 positions per magnetic period.
1 index pulse per pole pair
Linear movement measurement using multi-pole
magnetic strips
Circular off-axis movement measurement using multi-
pole magnetic rings
4.5 to 5.5V operating voltage
Magnetic field strength indicator, magnetic field alarm
for end-of-strip or missing magnet
4 Applications
The AS5304/AS5306 are ideal for high speed linear motion
and off-axis rotation measurement in applications such as
electrical motors
X-Y-stages
rotation knobs
industrial drives
Figure 1:
Revision 1.5
AS5304 (AS5306) with multi-pole ring magnet.
Figure 2:
www.austriamicrosystems.com
AS5306 (AS5304) with magnetic multi-pole strip magnet
for linear motion measurement
Page 1 of 13




AS5304 pdf, 반도체, 판매, 대치품
AS5304/AS5306 Integrated Hall IC for linear and off-axis rotary motion detection
www.DataSheet4U.com
Symbol
A
A1
A2
b
c
D
E
E1
e
K
L
Min
-
0.05
0.80
0.19
0.09
6.40
4.30
0.45
Dimensions
mm
Typ Max Min
- 1.20 -
- 0.15 0.002
1.00 1.05 0.031
- 0.30 0.007
- 0.20 0.004
6.50 6.60 0.252
6.40
4.40 4.50 0.169
0.65
- 8° 0°
0.60 0.75 0.018
inch
Typ
-
-
0.039
-
-
0.256
0.252
0.173
0.0256
-
0.024
Max
0.047
0.006
0.041
0.012
0.008
0.260
0.177
0.030
Marking: AYWWIZZ
A: Pb-Free Identifier
Y: Last Digit of Manufacturing Year
WW: Manufacturing Week
I: Plant Identifier
ZZ: Traceability Code
JEDEC Package Outline Standard:
MO-153-AC
Thermal Resistance Rth(j-a):
89 K/W in still air, soldered on PCB.
IC's marked with a white dot or the letters "ES" denote
Engineering Samples
6.3 Electrical Connection
The supply pins VDD, VDDP and VDDA are connected to +5V. Pins VSS and TEST_GND are connected to the supply ground. A
100nF decoupling capacitor close to the device is recommended.
Figure 5: Electrical connection of the AS5304/AS5306
Revision 1.5
www.austriamicrosystems.com
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AS5304 전자부품, 판매, 대치품
AS5304/AS5306 Integrated Hall IC for linear and off-axis rotary motion detection
www.DataSheet4U.com
3. It is therefore recommended to continue to the next (second) index position from the end of the strip (Index = high,
A=B= high). This position can now be used as a defined home position.
7.2 Incremental Hysteresis
Increm en tal
o ut put
X +4
H ys teres is:
1 LSB
X +3
X +2
X +1
X
M agnet po sition
X X+1 X+2 X+ 3 X+4
Mov ement d ir ection: +X
M ovem ent direc tion: -X
If the magnet is sitting right at the transition point between two steps, the
noise in the system may cause the incremental outputs to jitter back and
forth between these two steps, especially when the magnetic field is
weak.
To avoid this unwanted jitter, a hysteresis has been implemented. The
hysteresis lies between 1 and 2 LSB, depending on device scattering.
Figure 8 shows an example of 1LSB hysteresis: the horizontal axis is the
lateral position of the magnet as it scans across the IC, the vertical axis
is the change of the incremental outputs, as they step forward (blue line)
with movement in +X direction and backward (red line) in –X direction.
Note: 1LSB = 25µm for AS5304, 15µm for AS5306
Figure 8: Hysteresis of the incremental output
7.3 Integral Non-Linearity (INL)
The INL (integral non-linearity) is the deviation between indicated position and actual position. It is better than 1LSB for both
AS5304 and AS5306, assuming an ideal magnet. Pole length variations and imperfections of the magnet material, which lead to
a non-sinusoidal magnetic field will attribute to additional linearity errors.
7.3.1 Error Caused by Pole Length Variations
AS5304 Systematic Linearity Error caused by Pole
Length Deviation
140
120
100
80
60
40
20
0
1500
1700
Error [µm]
1900
2100
Pole Length [μm]
2300
Figure 9 and Figure 10 show the error caused by a non-ideal
pole length of the multi-pole strip or ring.
This is less of an issue with strip magnets, as they can be
manufactured exactly to specification using the proper
magnetization tooling.
2500
Figure 9: Additional error caused by pole length variation: AS5304
AS5306 Systematic Linearity Error caused by Pole
Length Deviation
140
120
100
80
60
40
20
0
900
Error [µm]
1000
1100 1200 1300
Pole Length [μm]
1400
1500
However, when using a ring magnet (see Figure 1) the pole
length differs depending on the measurement radius. For
optimum performance it is therefore essential to mount the
IC such that the Hall sensors are exactly underneath the
magnet at the radius where the pole length is 2.0mm
(AS5304) or 1.2mm (AS5306), see also 8.1.2.
Note that this is an additional error, which must be added to
the intrinsic errors INL (see 7.3) and DNL (see 7.4).
Figure 10: Additional error caused by pole length variation: AS5306
Revision 1.5
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AS5304

Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection

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AS5304

Integrated Hall ICs

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