ams Datasheet Page 1
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306
Integrated Hall ICs for Linear and
Off-Axis Rotary Motion Detection
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 (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°C to 125°C.
Ordering Information and Content Guide appear at end of
datasheet.
General Description
Page 2 ams Datasheet
Document Feedback [v2-00] 2017-May-03
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
•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.
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)
ams Datasheet Page 3
[v2-00] 2017-May-03 Document Feedback
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
Signal
Processing
&
Channel
Amplifier
Hall Array
&
Frontend
Amplifier
ADC
&
DSP
A/B
Quadrature
Incremental
Interface
&
Index
CO S
SIN
AO
Automatic
Gain
Control
SIN
COS
B
A
Analog
Output
Index
magnetic
field alarm
AS5304 / AS5306
Page 4 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Pin Assignments
Figure 3:
Pin Assignments (Top View)
Figure 4:
Pin Description
Pin
Number Pin Name Pin Type Description
1 VSS Supply pin Supply ground
2A
Digital output push pull or
open drain (programmable)
Incremental quadrature position output A.
Short circuit current limitation
3 VDDP Supply pin Peripheral supply pin, connect to VDD
4B
Digital output push pull or
open drain (programmable)
Incremental quadrature position output B.
Short Circuit Current Limitation
5,12,13,
14,17,18,19 TEST Analog input/output Test pins, must be left open
6 AO Analog output AGC Analog Output. (Used to detect low
magnetic field strength)
7 VDD Supply pin Positive supply pin
8Index
Digital output push pull or
open drain (programmable)
Index output, active HIGH. Short Circuit
Current Limitation
Pin Assignments
VSS
A
VDDP
VDD
AO
TEST
B
TEST_GND
NC
INDEX
NC NC
TEST
TEST
TEST
TEST
TEST
TEST
VDDA
ZPZ
6
1
2
9
7
8
5
3
4
10
15
20
19
12
14
13
16
18
17
11
AS5304 / AS5306
ams Datasheet Page 5
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Pin Assignments
9,10,11 TEST Analog input/output Test pins, must be left open
15 TEST_GND
Supply pin
Test pin, must be connected to VSS
16 VDDA Hall Hall Bias Supply Support (connected to VDD)
20 ZPZmskdis Digital input Test input, connect to VSS during operation
Pin
Number Pin Name Pin Type Description
Page 6 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − 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 Parameter Min Max Units Comments
VDD Supply -0.3 7 V
Vin Input pin voltage VSS-0.5 VDD+0.5 V
Iscr Input current
(latchup immunity) -100 100 mA JESD78
ESDHBM Electrostatic discharge (human
body model) ±2 kV MIL 883 E method 3015
ΘJA Package thermal resistance 114.5 °C /W Still Air / Single Layer PCB
Tstrg Storage temperature -55 150 °C
Tbody Soldering conditions 260 °C IPC/JEDEC J-STD-020
RHNC Relative Humidity
non-condensing 585%
MSL Moisture Sensitivity Level 3 Represents a maximum
floor life time of 168h
Absolute Maximum Ratings
ams Datasheet Page 7
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − 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
System Parameters
Figure 7:
System Parameters
Symbol Parameter Conditions Min Typ Max Unit
AVDD Positive supply voltage
4.5 5.0 5.5 V
DVDD Digital supply voltage
VSS Negative supply voltage 0.0 0.0 0.0 V
IDD
Power supply current,
AS5304
A/B/Index, AO unloaded!
25 35
mA
Power supply current,
AS5306 20 30
Tamb Ambient temperature -40 125 °C
TJJunction temperature -40 150 °C
LSB Resolution
AS5304 25
µm
AS5306 15
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
Symbol Parameter Conditions Min Typ Max Unit
TPwrUp Power up time
Amplitude within valid range /
Interpolator locked, A B Index
enabled
500 µs
TProp Propagation delay Time between change of input
signal to output signal 20 µs
Electrical Characteristics
Page 8 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Electrical Characteristics
A / B / C Push/Pull or Open Drain Output
Push Pull Mode is set for AS530xA, Open Drain Mode is set for
AS530xB versions.
Figure 8:
Open Drain Output
Figure 9:
Typical Digital Load
Symbol Parameter Conditions Min Typ Max Unit
VOH High level output voltage Push/Pull mode 0.8
VDD V
VOL Low level output voltage 0.4 +
VSS V
ILOH Current source capability Push/Pull mode 12 14 mA
ILOL Current sink capability 13 15 mA
IShort Short circuit limitation
current
Reduces maximum
operating temperature 25 39 mA
CLCapacitive load see Figure 9 20 pF
RLLoad resistance see Figure 9 820
tRRise time Push/Pull mode 1.2 µs
tFFall time 1.2 µs
RL = 820O
TTL
74LS00
CL = 20pF
A/B/Index
from
AS5304/6
VDD = 5V
ams Datasheet Page 9
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Electrical Characteristics
CAO Analog Output Buffer
Figure 10:
CAO Analog Output Buffer
Magnetic Input
Figure 11:
Magnetic Input
Symbol Parameter Conditions Min Typ Max Unit
VOutRange Minimum output
voltage Strong field, minimum AGC 0.5 1 1.2 V
VOutRange Maximum output
voltage Weak field, maximum AGC 3 4 5.1 V
VOffs Offset ±10 mV
ILCurrent sink / source
capability 5mA
IShort Average short circuit
current
Reduces maximum operating
temperature 640mA
CLCapacitive load 10 pF
BW Bandwidth 5 kHz
Symbol Parameter Conditions Min Typ Max Unit
LP_FP Magnetic pole length
AS5304 2.0
mm
AS5306 1.2
TFP Magnetic pole pair
length
AS5304 4.0
mm
AS5306 2.4
Amag Magnetic amplitude 10 60 mT
Operating dynamic
input range 1:6 1:12
Offmag Magnetic offset ±0.5 mT
Tdmag Magnetic
temperature drift -0.2 %/K
fmag Input frequency 0 5 kHz
Page 10 ams Datasheet
Document Feedback [v2-00] 2017-May-03
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.
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.
Detailed Description
ams Datasheet Page 11
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Detailed Description
Figure 12:
Electrical Connection of the AS5304 / AS5306
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.
VSS
A
VDDP
VDD
AO
TEST
B
TEST_GND
NC
INDEX
NC NC
TEST
TEST
TEST
TEST
TEST
TEST
VDDA
ZPZ
6
1
2
9
7
8
5
3
4
10
15
20
19
12
14
13
16
18
17
11
Quadrature
Position A
Quadrature
Position B
No Connect
No Connect
No Connect
Index
VDD = 5V
0.1uF 10uF
(optional)
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
HOST
uC
VDD = 5V
10K
AS5304B,
AS5306B
ONLY!
AS5304A
AS5304B
AS5306A
AS5306B
ams Datasheet Page 13
[v2-00] 2017-May-03 Document Feedback
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
Page 14 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Detailed Description
Figure 14:
Magnet Placement for Index Pulse Generation
3. 0475±0. 235
4.220±0.235
Hall Array Center Line
Magnet drawn at
index position X=0
CW magnet
movement direction
Pin 1
Chip Top view
3. 0475±0. 235
4.220±0.235
Hall Array Center Line
Magnet drawn at
position X 1
( exaggerated)
CW magnet
movement direction
Pin 1
Chip Top view
X=X1
X=0
X
X=0
X
25µm (AS5304)
15µm (AS5306)
Index = High
Index = Low
N S
N S
ams Datasheet Page 15
[v2-00] 2017-May-03 Document Feedback
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
Page 16 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Detailed Description
Figure 15:
Hysteresis of the Incremental Output
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.
Magnet position
Hysteresis:
1 LSB
X +2
Incremental
output
Movement direction: +X
Movement direction: - X
X +4
XX
X +1
X +3
X+1 X+2 X+3 X+4
ams Datasheet Page 17
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Detailed Description
Figure 16:
Additional Error Caused by Pole Length Variation: AS5304
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
AS5304 Systematic Linearity Error caused by Pole
Leng th Deviation
0
20
40
60
80
100
120
140
1500 1700 1900 2100 2300 2500
Pole Leng th [µm ]
Error [µm]
Error [µm]
AS5306 Systematic Linearity Error caused by Pole
Leng th Deviation
0
20
40
60
80
100
120
140
900 1000 1100 1200 1300 1400 1500
Pole Length [µm]
Error [µm]
Error [µm]
Page 18 ams Datasheet
Document Feedback [v2-00] 2017-May-03
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.
Figure 18:
DNL of AS5304 (left) and AS5306 (right)
1 LSB + DNL
1 LSB -DNL
1 LSB
lateral magnet movement
incremental output steps
37.5 µm
25 µm
12.5 µm
AS5304:
DNL (dynamic non-linearity
1 LSB + DNL
1 LSB -DNL
1 LSB
lateral magnet movement
incremental output steps
22.5 µm
15 µm
7. 5 µm
AS5306:
DNL (dynamic non-linearity
ams Datasheet Page 19
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Detailed Description
The AO Output
The An al og Ou tp ut (AO) prov id es an an alo g o utput 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
vertical gap
V
AO
[V]
0.5
1.2
3
5.1
strong field,
low AGC
weak field,
high AGC
recommended range
ams Datasheet Page 21
[v2-00] 2017-May-03 Document Feedback
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
Page 22 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Application I nformation
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}
Page 24 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Package D rawin gs & M arki ng s
Figure 23:
Package Dimensions
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 MZZ @
Year Manufacturing Week Assembly Plant Identifier Assembly Traceability Code Sublot Identifier
Symbol Min Nom Max
A--1.20
A1 0.05 - 0.15
A2 0.80 1.00 1.05
b 0.19 - 0.30
c 0.09 - 0.20
D 6.40 6.50 6.60
E-6.40 BSC-
E1 4.30 4.40 4.50
e-0.65 BSC-
L 0.45 0.60 0.75
L1 - 1.00 REF -
Symbol Min Nom Max
R0.09- -
R1 0.09 - -
S0.20- -
q10º - 8º
θ2-12 REF-
θ3-12 REF-
aaa - 0.10 -
bbb - 0.10 -
ccc - 0.05 -
ddd - 0.20 -
N20
Page 26 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Ordering & Contact Information
The devices are available as the standard products shown in the
below figure.
Figure 26:
Ordering Information
Buy our products or get free samples online at:
www.ams.com/ICdirect
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 AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
Ordering Code Package Description Delivery
Form
Delivery
Quantity
AS5304
AS5304A 20-pin
TSSOP
25m resolution, 2mm Magnet
pole length, Push Pull Tape & Reel 4500 pcs/reel
500 pcs/reel
AS5304B 20-pin
TSSOP
25m resolution, 2mm Magnet
pole length, Open Drain Tape & Reel 4500 pcs/reel
500 pcs/reel
AS5306
AS5306A 20-pin
TSSOP
15m resolution, 1.2mm Magnet
pole length, Push Pull Tape & Reel 4500 pcs/reel
500 pcs/reel
AS5306B 20-pin
TSSOP
15m resolution, 1.2mm Magnet
pole length, Open Drain Tape & Reel 4500 pcs/reel
500 pcs/reel
Ordering & Contact Information
ams Datasheet Page 27
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − RoHS Compliant & ams Green Statement
RoHS: The term RoHS compliant means that ams AG products
fully comply with current RoHS directives. Our semiconductor
products do not contain any chemicals for all 6 substance
categories, 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): 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).
Important Information: The information provided in this
statement represents ams AG knowledge and belief as of the
date that it is provided. ams 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 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 AG
and ams AG suppliers consider certain information to be
proprietary, and thus CAS numbers and other limited
information may not be available for release.
RoHS Compliant & ams Green
Statement
Page 28 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Copyrights & Disclaimer
Copyright ams 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 AG are covered by the warranty and patent
indemnification provisions appearing in its General Terms of
Trade. ams AG makes no warranty, express, statutory, implied,
or by description regarding the information set forth herein.
ams 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 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 AG for
each application. This product is provided by ams 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 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 AG rendering of technical or other services.
Copyrights & Disclaimer
ams Datasheet Page 29
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Document Status
Document Status Product Status Definition
Product Preview 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
Preliminary Datasheet 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
Datasheet 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 AG standard warranty as given in the General Terms of
Trade
Datasheet (discontinued) Discontinued
Information in this datasheet is based on products which
conform to specifications in accordance with the terms of
ams 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
Document Status
Page 30 ams Datasheet
Document Feedback [v2-00] 2017-May-03
AS5304/AS5306 − Revision Information
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.
Changes from 1.9 to current revision 2-00 (2017-May-03) Page
Content was updated to the latest ams design
Updated Figure 1 2
Updated Figure 22 23
Updated Figure 24 24
Updated Figure 26 26
Revision Information
ams Datasheet Page 31
[v2-00] 2017-May-03 Document Feedback
AS5304/AS5306 − Content Guide
1 General Description
2 Key Benefits and Features
2 Applications
3 Block Diagram
4 Pin Assignments
6Absolute Maximum Ratings
7 Electrical Characteristics
7 Operating Conditions
7 System Parameters
8 A / B / C Push/Pull or Open Drain Output
9 CAO Analog Output Buffer
9Magnetic Input
10 Detailed Description
10 Electrical Connection
11 Incremental Quadrature AB Output
11 Index Pulse
13 Magnetic Field Warning Indicator
13 Vertical Distance between Magnet and IC
15 Soft Stop Feature for Linear Movement Measurement
15 Incremental Hysteresis
16 Integral Non-Linearity (INL)
16 Error Caused by Pole Length Variations
18 Dynamic Non-Linearity (DNL)
19 The AO Output
20 Application Information
21 Resolution and Maximum Rotating Speed
21 Resolution
21 Multi-Pole Ring Diameter
22 Maximum Rotation Speed
22 Maximum Linear Travelling Speed
23 Package Drawings & Markings
25 Sensor Placement in Package
26 Ordering & Contact Information
27 RoHS Compliant & ams Green Statement
28 Copyrights & Disclaimer
29 Document Status
30 Revision Information
Content Guide
