AS5304/AS5306
Integrated Hall ICs for Linear and
Off-Axis Rotary Motion Detection
General Description
The AS5304/AS5306 are single-chip ICs 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/second (AS5304) or 12 meters/second
(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/revolution, which is equivalent to 5120
positions/revolution 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 (AS5304A) 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°C to 125°C.
Ordering Information and Content Guide appear at end of
datasheet.
Datasheet, Public
[v3-00] 2022-Jan-24
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AS5304/AS5306 − General Description
Key Benefits and Features
The benefits and features of this device are listed below:
Figure 1:
Added Value of Using AS5304/AS5306
Benefits
Features
• Contactless motion and position sensing
• Highest reliability and durability in harsh environments
• High speed measurement
• Control of high speed movements
• Robust against external magnetic stray fields
• Lower material cost (no magnetic shielding needed)
• 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
• 4.5V to 5.5V operating voltage
• Magnetic field strength indicator, magnetic field alarm for
end-of-strip or missing magnet
Applications
The AS5304 and AS5306 are ideal for high speed linear motion
and off-axis rotation measurement in applications, such as
electrical motors, X-Y-stages, rotation knobs, and industrial
drives.
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AS5304/AS5306 − General Description
Block Diagram
The functional blocks of the AS5304 and AS5306 are shown
below:
Figure 2:
Functional Blocks of the AS5304/06
AS5304 / AS5306
S IN
Hall Array
&
Frontend
Amplifier
CO S
SIN
Signal
Processing
&
Channel
Amplifier
Automatic
Gain
Control
Datasheet, Public
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C OS
ADC
&
DSP
A/ B
Quadrature
Incremental
Interface
&
Index
A
B
Index
magnetic
field alarm
Analog
Output
AO
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AS5304/AS5306 − Pin Assignments
Pin Assignments
Figure 3:
Pin Assignments (Top View)
1
20
ZPZ
A
2
19
TEST
VDDP
3
18
TEST
B
4
17
TEST
TEST
5
16
VDDA
AO
6
15
TEST_GND
VDD
7
14
TEST
INDEX
8
13
TEST
NC
9
12
TEST
NC
10
11
NC
AS5304 / AS5306
VSS
Figure 4:
Pin Description
Pin
Number
Pin Name
1
VSS
2
A
3
VDDP
4
B
5,12,13,
14,17,18,19
TEST
6
AO
7
8
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Pin Type
Description
Supply pin
Supply ground
Digital output push pull or
open drain (programmable)
Incremental quadrature position output A.
Short circuit current limitation
Supply pin
Peripheral supply pin, connect to VDD
Digital output push pull or
open drain (programmable)
Incremental quadrature position output B.
Short Circuit Current Limitation
Analog input/output
Test pins, must be left open
Analog output
AGC Analog Output. (Used to detect low
magnetic field strength)
VDD
Supply pin
Positive supply pin
Index
Digital output push pull or
open drain (programmable)
Index output, active HIGH. Short Circuit
Current Limitation
Datasheet, Public
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AS5304/AS5306 − Pin Assignments
Pin
Number
Pin Name
9,10,11
TEST
15
TEST_GND
Pin Type
Analog input/output
Description
Test pins, must be left open
Test pin, must be connected to VSS
Supply pin
16
VDDA Hall
20
ZPZmskdis
Datasheet, Public
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Hall Bias Supply Support (connected to VDD)
Digital input
Test input, connect to VSS during operation
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AS5304/AS5306 − 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 Electrical
Characteristics is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device
reliability.
Figure 5:
Absolute Maximum Ratings
Symbol
VDD
Parameter
Supply
Vin
Input pin voltage
Iscr
Input current
(latchup immunity)
ESDHBM
Min
Max
Units
-0.3
7
V
VSS-0.5
VDD+0.5
V
-100
100
mA
Electrostatic discharge (human
body model)
ΘJA
Package thermal resistance
Tstrg
Storage temperature
Tbody
Soldering conditions
RHNC
Relative Humidity
non-condensing
MSL
Moisture Sensitivity Level
Page 6
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±2
-55
5
3
kV
114.5
°C /W
150
°C
260
°C
85
%
Comments
JESD78
MIL 883 E method 3015
Still Air / Single Layer PCB
IPC/JEDEC J-STD-020
Represents a maximum
floor life time of 168h
Datasheet, Public
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AS5304/AS5306 − Electrical Characteristics
Electrical Characteristics
All limits are guaranteed. The parameters with min and max
values are guaranteed with production tests or SQC (Statistical
Quality Control) methods.
Operating Conditions
Figure 6:
Operating Conditions
Symbol
Parameter
Min
Typ
Max
Unit
4.5
5.0
5.5
V
Negative supply voltage
0.0
0.0
0.0
V
Power supply current,
AS5304
25
AVDD
Positive supply voltage
DVDD
Digital supply voltage
VSS
IDD
Conditions
35
A/B/Index, AO unloaded!
mA
Power supply current,
AS5306
20
30
Tamb
Ambient temperature
-40
125
°C
TJ
Junction temperature
-40
150
°C
LSB
AS5304
25
AS5306
15
Resolution
μm
INL
Integral nonlinearity
Ideal input signal
(ErrMax - ErrMin) / 2
2.5
LSB
DNL
Differential nonlinearity
No missing pulses.
Optimum alignment
±0.5
LSB
Hyst
Hysteresis
1
1.5
2
LSB
Min
Typ
Max
Unit
System Parameters
Figure 7:
System Parameters
Symbol
TPwrUp
TProp
Parameter
Conditions
Power up time
Amplitude within valid range /
Interpolator locked, A B Index
enabled
500
μs
Propagation delay
Time between change of input
signal to output signal
20
μs
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AS5304/AS5306 − Electrical Characteristics
A / B / C Push/Pull or Open Drain Output
Push Pull Mode is set for AS5304A, Open Drain Mode is set for
AS530xB versions.
Figure 8:
Open Drain Output
Symbol
Parameter
Conditions
Min
Typ
Max
0.8
VDD
Unit
VOH
High level output voltage
VOL
Low level output voltage
ILOH
Current source capability
ILOL
Current sink capability
IShort
Short circuit limitation
current
Reduces maximum
operating temperature
25
CL
Capacitive load
see Figure 9
20
pF
RL
Load resistance
see Figure 9
820
Ω
tR
Rise time
Push/Pull mode
tF
Fall time
Push/Pull mode
V
0.4 +
VSS
Push/Pull mode
V
12
14
mA
13
15
mA
39
mA
1.2
μs
1.2
μs
Figure 9:
Typical Digital Load
VDD = 5V
R L = 820O
A/B/Index
from
AS5304/6
TTL
74LS00
C L = 20pF
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AS5304/AS5306 − Electrical Characteristics
CAO Analog Output Buffer
Figure 10:
CAO Analog Output Buffer
Symbol
Parameter
VOutRange
Minimum output
voltage
VOutRange
Maximum output
voltage
VOffs
Conditions
Min
Typ
Max
Unit
Strong field, minimum AGC
0.5
1
1.2
V
Weak field, maximum AGC
3
4
5.1
V
±10
mV
Offset
IL
Current sink / source
capability
IShort
Average short circuit
current
5
Reduces maximum operating
temperature
mA
6
40
mA
CL
Capacitive load
10
pF
BW
Bandwidth
5
kHz
Magnetic Input
Figure 11:
Magnetic Input
Symbol
Parameter
LP_FP
Magnetic pole length
TFP
Amag
Magnetic pole pair
length
Conditions
Min
Typ
AS5304
2.0
AS5306
1.2
AS5304
4.0
AS5306
2.4
Max
Unit
mm
mm
Magnetic amplitude
10
60
Operating dynamic
input range
1:6
1:12
mT
Offmag
Magnetic offset
±0.5
mT
Tdmag
Magnetic
temperature drift
-0.2
%/K
fmag
Input frequency
5
kHz
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AS5304/AS5306 − Detailed Description
The AS5304/AS5306 require a multi-pole magnetic strip or ring
with a pole length of 2mm (4mm pole pair length) on the
AS5304, and a pole length of 1.2mm (2.4mm pole pair length)
on the AS5306. The magnetic field strength of the multi-pole
magnet should be in the range of 5mT to 60mT at the chip
surface.
Detailed Description
The Hall elements on the AS5304/AS5306 are arranged in a
linear array.
By moving the multi-pole magnet over the Hall array, a
sinusoidal signal (SIN) is generated internally. With proper
configuration of the Hall elements, a second 90° phase shifted
sinusoidal signal (COS) is obtained. Using an interpolation
circuit, the length of a pole pair is divided into 160 positions
and further decoded into 40 quadrature pulses.
An Automatic Gain Control provides a large dynamic input
range of the magnetic field.
An Analog output pin (AO) provides an analog voltage that
changes with the strength of the magnetic field (see The AO
Output).
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 12:
Electrical Connection of the AS5304 / AS5306
VDD = 5V
10K
AS5304B,
AS5306B
ONLY !
1
VSS
Quadrature
Position A
2
3
Quadrature
Position B
HOST
uC
4
No Connect
5
6
7
8
Index
No Connect
No Connect
Page 10
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9
10
A
VDDP
B
TEST
AO
VDD
INDEX
NC
AS5304A,
AS5304B,
AS5306B
ZPZ
TEST
TEST
TEST
VDDA
TEST_GND
TEST
TEST
TEST
20
19
18
17
No Connect
No Connect
No Connect
16
VDD = 5V
0.1uF
15
14
10uF
(optional)
No Connect
13
No Connect
12
No Connect
11
NC
NC
No Connect
Datasheet, Public
[v3-00] 2022-Jan-24
AS5304/AS5306 − Detailed Description
Incremental Quadrature AB Output
The digital output is compatible to optical incremental encoder
outputs. Direction of rotation is encoded into two signals A and
B that are phase-shifted by 90º. Depending on the direction of
rotation, A leads B (CW) or B leads A (CCW).
Index Pulse
A single index pulse is generated once for every pole pair. One
pole pair is interpolated to 40 quadrature pulses (160 steps), so
one index pulse is generated after every 40 quadrature pulses
(see Figure 13).
The Index output is switched to Index = high, when a magnet
is placed over the Hall array as shown in Figure 14, top graph:
the north pole of the magnet is placed over the left side of the
IC (top view, pin#1 at bottom left) and the south pole is placed
over the right side of the IC.
The index output will switch back to Index = low, when the
magnet is moved by one LSB from position X=0 to X=X1, as
shown in Figure 14, bottom graph. One LSB is 25μm for AS5304
and 15μm for AS5306.
Note(s): Since the small step size of 1 LSB is hardly recognizable
in a correctly scaled graph it is shown as an exaggerated step
in the bottom graph of Figure 14.
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AS5304/AS5306 − Detailed Description
Figure 13:
Quadrature A / B and Index Output
S
N
40
1
S
N
2
40
1
S
2
A
40
1
2
40
1
2
B
Index
Detail:
A
B
Index
Step #
Page 12
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157 158 159
0
1
2
3
4
5
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AS5304/AS5306 − Detailed Description
Magnetic Field Warning Indicator
The AS5304 can also provide a low magnetic field warning to
indicate a missing magnet or when the end of the magnetic
strip has been reached. This condition is indicated by using a
combination of A, B and Index, that does not occur in normal
operation:
A low magnetic field is indicated with:
Index = high
A=B=low
Vertical Distance between Magnet and IC
The recommended vertical distance between magnet and IC
depends on the strength of the magnet and the length of the
magnetic pole.
Typically, the vertical distance between magnet and chip
surface should not exceed ½ of the pole length. That means for
AS5304, having a pole length of 2.0mm, the maximum vertical
gap should be 1.0mm. For the AS5306, having a pole length of
1.2mm, the maximum vertical gap should be 0.6mm. These
figures refer to the chip surface. Given a typical distance of
0.2mm between chip surface and IC package surface, the
recommended vertical distances between magnet and IC
surface are therefore:
AS 5304: ≤ 0.8mm
AS 5306: ≤ 0.4mm
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AS5304/AS5306 − Detailed Description
X =0
Figure 14:
Magnet Placement for Index Pulse Generation
Magnet drawn at
index position X =0
X
CW magnet
movement direction
N
S
4.220±0.235
Hall Array Center Line
Index = High
Pin 1
Chip Top view
3. 0475±0. 235
X = X1
X=0
25µm(AS5304)
15µm(AS5306)
X
Magnet drawn at
position X 1
( exaggerated)
CW magnet
movement direction
N
Pin 1
Chip Top view
4.220±0.235
Hall Array Center Line
S
Index = Low
3. 0475±0. 235
Page 14
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Datasheet, Public
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AS5304/AS5306 − Detailed Description
Soft Stop Feature for Linear Movement Measurement
When using long multi-pole strips, it may often be necessary to
start from a defined home (or zero) position and obtain
absolute position information by counting the steps from the
defined home position. The AS5304/AS5306 provide a soft stop
feature that eliminates the need for a separate
electro-mechanical home position switch or an optical light
barrier switch to indicate the home position.
The magnetic field warning indicator (see Magnetic Field
Warning Indicator) together with the index pulse can be used
to indicate a unique home position on a magnetic strip:
1. Firstly, the AS5304/AS5306 move to the end of the strip
until a magnetic field warning is displayed (Index = high,
A=B=low).
2. Then, the AS5304/AS5306 move back towards the strip
until the first index position is reached (Note that an
index position is generated once for every pole pair, it
is indicated with: Index = high, A=B= high). Depending
on the polarity of the strip magnet, the first index
position may be generated when the end of the magnet
strip only covers one half of the Hall array. This position
is not recommended as a defined home position, as the
accuracy of the AS5304/AS5306 are reduced as long as
the multi-pole strip does not fully cover the Hall array.
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.
Incremental Hysteresis
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 15 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(s): 1LSB = 25μm for AS5304, 15μm for AS5306
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AS5304/AS5306 − Detailed Description
Figure 15:
Hysteresis of the Incremental Output
Incremental
output
Hysteresis:
1 LSB
X +4
X +3
X +2
X +1
Magnet position
X
X
X+1
X+2
X+3
X+4
Movement direction: +X
Movement direction: - X
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.
Error Caused by Pole Length Variations
Figure 16 and Figure 17 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.
Page 16
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AS5304/AS5306 − Detailed Description
Figure 16:
Additional Error Caused by Pole Length Variation: AS5304
Error [µm]
AS5304 Systematic Linearity Error caused by Pole
Leng th Deviation
140
120
100
80
60
40
20
0
1500
Error [µm]
1700
1900
2100
2300
2500
Pole Leng th [µm ]
However, when using a ring magnet (see Figure 20), 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 Multi-Pole Ring Diameter.
Note(s): This is an additional error, which must be added to the
intrinsic errors INL (page 16) and DNL (page 18).
Figure 17:
Additional Error Caused by Pole Length Variation: AS5306
Error [µm]
AS5306 Systematic Linearity Error caused by Pole
Leng th Deviation
140
120
100
80
60
40
20
0
Error [µm]
900
1000
1100
1200
1300
1400
1500
Pole Leng th [µm ]
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AS5304/AS5306 − Detailed Description
Dynamic Non-Linearity (DNL)
The DNL (dynamic non-linearity) describes the non-linearity of
the incremental outputs from one step to the next. In an ideal
system, every change of the incremental outputs would occur
after exactly one LSB (e.g. 25μm on AS5304). In practice
however, this step size is not ideal, the output state will change
after 1LSB ±DNL. The DNL must be < ±½ LSB to avoid a missing
code. Consequently, the incremental outputs will change when
the magnet movement over the IC is minimum 0.5 LSB and
maximum 1.5 LSBs.
AS5304:
DNL (dynamic non-linearity
1 LSB -DNL
12.5µm
1 LSB
25µm
1 LSB+ DNL
37.5µm
AS5306:
DNL (dynamic non-linearity
1 LSB -DNL
7. 5µm
1 LSB
15µm
1 LSB + DNL
22.5µm
lateral magnet movement
Page 18
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incremental output steps
incremental output steps
Figure 18:
DNL of AS5304 (left) and AS5306 (right)
lateral magnet movement
Datasheet, Public
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AS5304/AS5306 − Detailed Description
The AO Output
The Analog Output (AO) provides an analog output voltage that
represents the Automatic Gain Control (AGC) of the Hall sensors
signal control loop.
This voltage can be used to monitor the magnetic field strength
and hence the gap between magnet and chip surface:
• Short distance between magnet and IC -> strong magnetic
field -> low loop gain -> low AO voltage
• Long distance between magnet and IC -> weak magnetic
field -> high loop gain -> high AO voltage
Figure 19:
AO vs. AGC, Magnetic Field Strength, Magnet-to-IC Gap
VAO [V]
weak field,
high AGC
5.1
3
1.2
strong field,
low AGC
recommended range
0.5
vertical gap
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AS5304/AS5306 − Application Information
Application Information
Figure 20:
AS5304 (AS5306) with Multi-Pole Ring Magnet
Figure 21:
AS5306 (AS5304) with Magnetic Multi-Pole Strip Magnet for Linear Motion Measurement
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AS5304/AS5306 − Application Information
Resolution and Maximum Rotating Speed
When using the AS5304/AS5306 in an off-axis rotary
application, a multi-pole ring magnet must be used. Resolution,
diameter and maximum speed depend on the number of pole
pairs on the ring.
Resolution
The angular resolution increases linearly with the number of
pole pairs. One pole pair has a resolution (= interpolation factor)
of 160 steps or 40 quadrature pulses.
Resolution [steps] = [interpolation factor] x [number of pole
pairs]
Resolution [bit] = log (resolution[steps]) / log (2)
Example: Multi-pole ring with 22 pole pairs
Resolution = 160x22 = 3520 steps per revolution
= 40x22 = 880 quadrature pulses / revolution
= 11.78 bits per revolution = 0.1023° per step
Multi-Pole Ring Diameter
The length of a pole pair across the median of the multi-pole
ring must remain fixed at either 4mm (AS5304) or 2.4mm
(AS5306). Hence, with increasing pole pair count, the diameter
increases linearly with the number of pole pairs on the
magnetic ring.
Magnetic ring diameter = [pole length] * [number of pole pairs] / π
for AS5304: d = 4.0mm * number of pole pairs / π
for AS5306: d = 2.4mm * number of pole pairs / π
Example: (same as above) Multi-pole ring with 22 pole pairs for
AS5304
Ring diameter = 4 * 22 / 3.14 = 28.01mm (this number
represents the median diameter of the ring, this is where the
Hall elements of the AS5304/AS5306 should be placed; (see
Figure 25).
For the AS5306, the same ring would have a diameter of:
2.4 * 22 / 3.14 = 16.8mm
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AS5304/AS5306 − Application Information
Maximum Rotation Speed
The AS5304/AS5306 use a fast interpolation technique allowing
an input frequency of 5kHz. This means, it can process magnetic
field changes in the order of 5000 pole pairs per second or
300000 revolutions per minute. However, since a magnetic ring
consists of more than one pole pair, the above value must be
divided by the number of pole pairs to get the maximum
rotation speed:
Maximum rotation speed = 300000 rpm / [number of pole pairs]
Example: (same as above) Multi-pole ring with 22 pole pairs:
Maximum speed = 300000 / 22 = 13636 rpm (this is independent
of the pole length)
Maximum Linear Travelling Speed
For linear motion sensing, a multi-pole strip using equally
spaced north and south poles is used. The pole length is again
fixed at 2.0mm for the AS5304 and 1.2mm for the AS5306. As
shown in Maximum Rotation Speed above, the sensors can
process up to 5000 pole pairs per second, so the maximum
travelling speed is:
Maximum linear travelling speed = 5000 * [pole pair length]
Example: Linear multi-pole strip:
Maximum linear travelling speed = 4mm * 5000 1/s =
20000mm/s = 20m/s {for AS5304}
Maximum linear travelling speed = 2.4mm * 5000 1/s =
12000mm/s = 12m/s {for AS5306}
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AS5304/AS5306 − Package Drawings & Markings
Package Drawings & Markings
The devices are available in a 20-pin TSSOP package.
Figure 22:
Packaging Drawings and Dimensions
YYWWMZZ @
AS5304
YYWWMZZ @
AS5306
Datasheet, Public
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AS5304/AS5306 − Package Drawings & Markings
Figure 23:
Package Dimensions
Symbol
Min
Nom
Max
Symbol
Min
Nom
Max
A
-
-
1.20
R
0.09
-
-
A1
0.05
-
0.15
R1
0.09
-
-
A2
0.80
1.00
1.05
S
0.20
-
-
b
0.19
-
0.30
q1
0º
-
8º
c
0.09
-
0.20
θ2
-
12 REF
-
D
6.40
6.50
6.60
θ3
-
12 REF
-
E
-
6.40 BSC
-
aaa
-
0.10
-
E1
4.30
4.40
4.50
bbb
-
0.10
-
e
-
0.65 BSC
-
ccc
-
0.05
-
L
0.45
0.60
0.75
ddd
-
0.20
-
L1
-
1.00 REF
-
N
20
Note(s):
1. Dimensions and tolerancing conform to ASME Y14.5M-1994.
2. All dimensions are in millimeters. Angles are in degrees.
Figure 24:
Packaging Code
YY
WW
M
ZZ
@
Year
Manufacturing Week
Assembly Plant Identifier
Assembly Traceability Code
Sublot Identifier
Page 24
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Datasheet, Public
[v3-00] 2022-Jan-24
AS5304/AS5306 − Package Drawings & Markings
Sensor Placement in Package
TSSOP20 / 0.65mm pin pitch
Figure 25:
Sensor in Package
3.200±0.235
Die C/L
1.02
0.2299±0.100
0.2341±0.100
Package
Outline
0.7701±0.150
3.0475±0.235
Die Tilt Tolerance ±1º
Datasheet, Public
[v3-00] 2022-Jan-24
Page 25
Document Feedback
AS5304/AS5306 − Ordering & Contact Information
Ordering & Contact Information
The devices are available as the standard products shown in the
below figure.
Figure 26:
Ordering Information
Ordering Code
Package
Description
Delivery
Form
Delivery
Quantity
AS5304
AS5304A
20-pin
TSSOP
25μm resolution, 2mm Magnet
pole length, Push Pull
Tape & Reel
500 pcs/reel
AS5304B
20-pin
TSSOP
25μm resolution, 2mm Magnet
pole length, Open Drain
Tape & Reel
4500 pcs/reel
500 pcs/reel
Tape & Reel
4500 pcs/reel
AS5306
AS5306B
20-pin
TSSOP
15μm resolution, 1.2mm Magnet
pole length, Open Drain
Buy our products or get free samples online at:
www.ams.com/Products
Technical Support is available at:
www.ams.com/Technical-Support
Provide feedback about this document at:
www.ams.com/Document-Feedback
For further information and requests, e-mail us at:
ams_sales@ams.com
For sales offices, distributors and representatives, please visit:
www.ams.com/Contact
Headquarters
ams-OSRAM AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
Page 26
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Datasheet, Public
[v3-00] 2022-Jan-24
AS5304/AS5306 − RoHS Compliant & ams Green Statement
RoHS Compliant & ams Green
Statement
RoHS: The term RoHS compliant means that ams-OSRAM AG
products fully comply with current RoHS directives. Our
semiconductor products do not contain any chemicals for all 6
substance categories plus additional 4 substance categories
(per amendment EU 2015/863), including the requirement that
lead not exceed 0.1% by weight in homogeneous materials.
Where designed to be soldered at high temperatures, RoHS
compliant products are suitable for use in specified lead-free
processes.
ams Green (RoHS compliant and no Sb/Br/Cl): ams Green
defines that in addition to RoHS compliance, our products are
free of Bromine (Br) and Antimony (Sb) based flame retardants
(Br or Sb do not exceed 0.1% by weight in homogeneous
material) and do not contain Chlorine (Cl not exceed 0.1% by
weight in homogeneous material).
Important Information: The information provided in this
statement represents ams-OSRAM AG knowledge and belief as
of the date that it is provided. ams-OSRAM AG bases its
knowledge and belief on information provided by third parties,
and makes no representation or warranty as to the accuracy of
such information. Efforts are underway to better integrate
information from third parties. ams-OSRAM AG has taken and
continues to take reasonable steps to provide representative
and accurate information but may not have conducted
destructive testing or chemical analysis on incoming materials
and chemicals. ams-OSRAM AG and ams-OSRAM AG suppliers
consider certain information to be proprietary, and thus CAS
numbers and other limited information may not be available
for release.
Datasheet, Public
[v3-00] 2022-Jan-24
Page 27
Document Feedback
AS5304/AS5306 − Copyrights & Disclaimer
Copyrights & Disclaimer
Copyright ams-OSRAM AG, Tobelbader Strasse 30, 8141
Premstaetten, Austria-Europe. Trademarks Registered. All
rights reserved. The material herein may not be reproduced,
adapted, merged, translated, stored, or used without the prior
written consent of the copyright owner.
Devices sold by ams-OSRAM AG are covered by the warranty
and patent indemnification provisions appearing in its General
Terms of Trade. ams-OSRAM AG makes no warranty, express,
statutory, implied, or by description regarding the information
set forth herein. ams-OSRAM AG reserves the right to change
specifications and prices at any time and without notice.
Therefore, prior to designing this product into a system, it is
necessary to check with ams-OSRAM AG for current
information. This product is intended for use in commercial
applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliability
applications, such as military, medical life-support or
life-sustaining equipment are specifically not recommended
without additional processing by ams-OSRAM AG for each
application. This product is provided by ams-OSRAM AG “AS IS”
and any express or implied warranties, including, but not
limited to the implied warranties of merchantability and fitness
for a particular purpose are disclaimed.
ams-OSRAM AG shall not be liable to recipient or any third party
for any damages, including but not limited to personal injury,
property damage, loss of profits, loss of use, interruption of
business or indirect, special, incidental or consequential
damages, of any kind, in connection with or arising out of the
furnishing, performance or use of the technical data herein. No
obligation or liability to recipient or any third party shall arise
or flow out of ams-OSRAM AG rendering of technical or other
services.
Page 28
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[v3-00] 2022-Jan-24
AS5304/AS5306 − Document Status
Document Status
Document Status
Product Preview
Preliminary Datasheet
Datasheet
Datasheet (discontinued)
Datasheet, Public
[v3-00] 2022-Jan-24
Product Status
Definition
Pre-Development
Information in this datasheet is based on product ideas in
the planning phase of development. All specifications are
design goals without any warranty and are subject to
change without notice
Pre-Production
Information in this datasheet is based on products in the
design, validation or qualification phase of development.
The performance and parameters shown in this document
are preliminary without any warranty and are subject to
change without notice
Production
Information in this datasheet is based on products in
ramp-up to full production or full production which
conform to specifications in accordance with the terms of
ams-OSRAM AG standard warranty as given in the General
Terms of Trade
Discontinued
Information in this datasheet is based on products which
conform to specifications in accordance with the terms of
ams-OSRAM AG standard warranty as given in the General
Terms of Trade, but these products have been superseded
and should not be used for new designs
Page 29
Document Feedback
AS5304/AS5306 − Revision Information
Revision Information
Changes from 2-00 (2017-May-03) to current revision 3-00 (2022-Jan-24)
Page
Replaced two instances of AS530xA with AS5304A
1, 8
Updated figure 12
10
Updated figure 26
26
Note(s):
1. Page and figure numbers for the previous version may differ from page and figure numbers in the current revision.
2. Correction of typographical errors is not explicitly mentioned.
Page 30
Document Feedback
Datasheet, Public
[v3-00] 2022-Jan-24
AS5304/AS5306 − Content Guide
Content Guide
Datasheet, Public
[v3-00] 2022-Jan-24
1
2
2
3
General Description
Key Benefits and Features
Applications
Block Diagram
4
6
Pin Assignments
Absolute Maximum Ratings
7
7
7
8
9
9
Electrical Characteristics
Operating Conditions
System Parameters
A / B / C Push/Pull or Open Drain Output
CAO Analog Output Buffer
Magnetic Input
10
10
11
11
13
13
15
15
16
16
18
19
Detailed Description
Electrical Connection
Incremental Quadrature AB Output
Index Pulse
Magnetic Field Warning Indicator
Vertical Distance between Magnet and IC
Soft Stop Feature for Linear Movement Measurement
Incremental Hysteresis
Integral Non-Linearity (INL)
Error Caused by Pole Length Variations
Dynamic Non-Linearity (DNL)
The AO Output
20
21
21
21
22
22
Application Information
Resolution and Maximum Rotating Speed
Resolution
Multi-Pole Ring Diameter
Maximum Rotation Speed
Maximum Linear Travelling Speed
23
25
Package Drawings & Markings
Sensor Placement in Package
26
27
28
29
30
Ordering & Contact Information
RoHS Compliant & ams Green Statement
Copyrights & Disclaimer
Document Status
Revision Information
Page 31
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