AS5304AATSU austriamicrosystems, AS5304AATSU Datasheet

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AS5304AATSU

Manufacturer Part Number
AS5304AATSU
Description
IC, LINEAR ENCODER, 12.3BIT, 20-TSSOP
Manufacturer
austriamicrosystems
Type
Linear Magneticr
Datasheet

Specifications of AS5304AATSU

Ic Function
Encoder IC
Supply Voltage Range
4.5V To 5.5V
Operating Temperature Range
-40°C To +125°C
Digital Ic Case Style
TSSOP
No. Of Pins
20
Termination Type
SMD
Filter Terminals
SMD
Rohs Compliant
Yes
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
1
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
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
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
(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.
Revision 1.5
AS5304 / AS5306
Integrated Hall ICs for
Linear and Off-Axis Rotary Motion Detection
Figure 1:
General Description
allows
chips
are
the
AS5304 (AS5306) with multi-pole ring magnet.
can
usage
available
provide
of
with
the
a
resolution
push-pull
AS5304/AS5306
www.austriamicrosystems.com
of
outputs
1280
in
2
3
4
The AS5304/AS5306 are ideal for high speed linear motion
and off-axis rotation measurement in applications such as
Figure 2:
Complete system-on-chip
High reliability due to non-contact sensing
Suitable for the use in harsh environments
Robust against external magnetic stray fields
High speed, up to 20m/s (AS5304)
Magnetic pole pair length: 4mm (AS5304) or
Resolution: 25µm (AS5304) or 15µm (AS5306)
40 pulses / 160 positions per magnetic period.
1 index pulse per pole pair
Linear
Circular off-axis movement measurement using multi-
4.5 to 5.5V operating voltage
Magnetic field strength indicator, magnetic field alarm
electrical motors
X-Y-stages
rotation knobs
industrial drives
magnetic strips
pole magnetic rings
for end-of-strip or missing magnet
Benefits
Key Features
Applications
AS5306 (AS5304) with magnetic multi-pole strip magnet
movement
for linear motion measurement
12m/s (AS5306)
measurement
PRELIMINARY DATA SHEET
2.4mm (AS5306)
using
Page 1 of 13
multi-pole

Related parts for AS5304AATSU

AS5304AATSU Summary of contents

Page 1

... 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 2: AS5306 (AS5304) with magnetic multi-pole strip magnet for linear motion measurement www.austriamicrosystems.com PRELIMINARY DATA SHEET 2.4mm (AS5306) measurement using multi-pole Page ...

Page 2

... An Analog output pin (AO) provides an analog voltage that changes with the strength of the magnetic field (see chapter 8). 6 Sensor Placement in Package TSSOP20 / 0.65mm pin pitch 3.0475±0.235 Die Tilt Tolerance ±1º Revision 1.5 Figure 3: AS5304 / AS5306 block diagram Die C/L Package Outline Figure 4: Sensor in package www.austriamicrosystems.com 0.2299±0.100 0.2341±0.100 0.7701±0.150 Page ...

Page 3

... AGC Analogue Output. (Used to detect low magnetic field strength) Positive supply pin Index output, active HIGH. Short Circuit Current Limitation test pins, must be left open test pin, must be connected to VSS Hall Bias Supply Support (connected to VDD) Test input, connect to VSS during operation AO analogue output DI digital input www.austriamicrosystems.com Page ...

Page 4

... JEDEC Package Outline Standard: - 0.012 MO-153-AC - 0.008 0.256 0.260 Thermal Resistance R 0.252 89 K/W in still air, soldered on PCB. 0.173 0.177 0.0256 IC's marked with a white dot or the letters "ES" denote - 8° Engineering Samples 0.024 0.030 Electrical connection of the AS5304/AS5306 www.austriamicrosystems.com : th(j-a) Page ...

Page 5

... 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 Revision 1 Index Detail Index Step # 157 158 159 Figure 6: Quadrature and Index output www.austriamicrosystems.com Page ...

Page 6

... Hall array. Revision 1.5 Magnet drawn at index position X magnet movement direction N S Index = High 25µm (AS5304) 15µm (AS5306) Magnet drawn at X position X1 (exaggerated) CW magnet movement direction N S Index = Low www.austriamicrosystems.com Page ...

Page 7

... 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). 1400 1500 www.austriamicrosystems.com Page ...

Page 8

... For ideal operation, the AO voltage should be between 1.0 and 4.0V (typical; see 9.5). Figure 12: Revision 1.5 AS5306: DNL (dynamic non-linearity) 12.5 µm 1 LSB + DNL 22.5 µm DNL of AS5304 (left) and AS5306 (right) AO output versus AGC, magnetic field strength, magnet-to-IC gap www.austriamicrosystems.com 1 LSB - DNL 7.5 µm 1 LSB 15 µm lateral magnet movement Page ...

Page 9

... Maximum linear travelling speed = 5000 * [pole pair length] Example: linear multi-pole strip: Max. linear travelling speed = 4mm * 5000 1/sec = 20,000mm/sec = 20m/sec Max. linear travelling speed = 2.4mm * 5000 1/sec = 12,000mm/sec = 12m/sec Revision 1.5 www.austriamicrosystems.com for AS5304 for AS5306 Page ...

Page 10

... Min Max Unit 500 µs PwrUp Interpolator locked Index enabled Time between change of input signal to 20 µs Prop www.austriamicrosystems.com Note Norm: Jedec 18 Norm: MIL 883 E method 3015 Still Air / Single Layer PCB Norm: IPC/JEDEC J-STD-020C Unit Note A/B/Index, AO unloaded! °C ° ...

Page 11

... Figure 13: Typical digital load Symbol Min Typ 0.5 1 OutRange 3.45 4 OutRange V Offs Short www.austriamicrosystems.com Unit Note V Push/Pull mode V mA Push/Pull mode mA Reduces maximum mA operating temperature pF See Figure 13 Ω See Figure 13 µs Push/Pull mode µs Max Unit Note Strong field, min. 1.2 ...

Page 12

... Min Typ Max 2.0 1.2 4.0 2 1:12 1:24 ±0.5 -0 Magnet Pole Length 2mm 2mm Magnet Pole Length 1.2mm 1.2mm www.austriamicrosystems.com Unit Note AS5304 mm AS5306 AS5304 mm AS5306 mT mT %/K kHz Digital Outputs Push Pull Open Drain Digital Outputs Push Pull Open Drain Page ...

Page 13

... No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems rendering of technical or other services. ...

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