2SA-10 Integrated 2-Axis Hall Sensor Measures components magnetic

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2SA-10 Integrated 2-Axis Hall Sensor Measures components magnetic

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2SA-10
2SA-10 Integrated 2-Axis Hall Sensor
Measures components magnetic field same spot. Excellent matching sensitivity along axes. Max. angle error from -40°C .+125°C: Very high sensitivity quiescent current Fabricated standard CMOS technology Very hysteresis Surface mount SOIC-8 package
Applications
position sensing Contactless potentiometer Angular position sensor micro motors Miniaturized contactless encoder Contactless rotary switch magnetic field mapping Joystick
General Description
Sentron's magnetic angular sensor 2SA-10 detects absolute angular position small magnet that positioned above device surface. 2SA-10 integrated combination CMOS Hall circuit thin ferromagnetic disk. CMOS circuit contains pairs Hall-elements each directions parallel with chip surface ferromagnetic disk amplifies external magnetic field concentrates Hall elements. 2SA-10 ideally suited rotary position sensing harsh automotive industrial environments. produces linear, ratio-metric output voltages proportional sine cosine function angle applied magnetic field parallel chip surface. circuit fabricated using standard CMOS process ferromagnetic disk added simple post-processing step. monolithic device incorporates Hall elements, offset cancellation circuitry, current source, chopper stabilized amplification circuitry, parameter programming capability. dynamic offset cancellation offset voltage caused temperature variations, packaging stress others strongly reduced. result, device extremely stable signal output, immune mechanical stress virtually immune temperature cycling. Therefore, circuit features wide application range very high accuracy.
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Package: Pin-out:
SOIC-8 CO_OUT, common output programming clock1) VDD, Supply voltage Y_OUT, Y-channel analog output X_OUT, X-channel analog output programming data1) programming voltage1) GND, Supply common
Note Used factory programming
Absolute Maximum Ratings
Symbol VSUP Parameter Supply Voltage Ambient Temperature Min. Max. +125 Unit
Remarks
Magnetic Input Conditions
Symbol BMAX
Parameter Max. Induction Diameter magnetic disk angular speed
Min.
Max. >1000 100'000
Unit
Remarks Device saturates,but damaged Figure location disk
Note center magnetic disc
Recommended Operating Conditions
Symbol VSUP IOUT
Parameter Supply Voltage Output Current Load Capacitance Magnetic Field
Min.
Typ.
Max. 1000
Unit
Remarks
Note center magnetic disc
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Electrical Characteristics
T=-40°C 150°C, VSUP=4.5V 5.5V otherwise specified. Symbol Parameter Min. Typ. Max. ISUP CO_OUT Supply Current Common (reference) Output Voltage Bandwidth: VSUP/2 -20mV VSUP/2 VSUP/2 +20mV Unit IOUT=0mA Test conditions
Note Ratio-metric (proportional VSUP
Analog Output-Characteristics 5,6)
Magnetic Sensitivity Magnetic Sensitivity Temperature drift Magnetic Sensitivity mismatch (X-Y) Phase matching Offset Voltage
With VSUP= temperature range -40oC 150oC, otherwise specified. Symbol Parameter Min. Typ. Max. Unit Test conditions S/ST Sx/Sy Sx-Sy Voff -0.05 -0.3 0.05 %/°C IOUT=0mA T=-40°C 150°C B=0T IOUT=0mA T=-20°C 80°C B=0T IOUT=0mA
Voff/T 7,8) 7,8) Bnoise
Offset Voltage Temperature drift Full Scale Magnetic Field Range Linear Magnetic Field Range Linearity Input referred magnetic noise spectrum density (RMS) Max. full scale output voltage Max. full scale output voltage Maximum Hysteresis
-0.05
0.05
mV/°C
BW=1Hz 10kHz
X_OUT Y_OUT
VSUP VSUP
VSUP VSUP 0.03
50mT 50mT BMAX
Note When analog output pins X_OUT Y_OUT used differential mode (i.e. Vx=X_OUT-CO_OUT) Note Ratio-metric (proportional VSUP Note center magnetic disk Note 2SA-10 also ordered with Sensitivity 25V/T BL=60mT BFS=80mT
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Block Diagram 2SA-10
Fig.
Block Diagram 2SA-10
Connection Diagram 2SA-10 IMPORTANT
reliable operation within specifications sensor must connected follows:
Connect (PD) (GND) Connect (PC) (Vdd) Connect (PV) (Vdd) 100nF capacitor close chip between (Vdd) (GND)
VSUP
2SA-10 CO_Out 100nF* Y_Out
X_Out
supply voltage disturbed useful place second capacitor (100pF, ceramic) parallel 100nF capacitor.
Fig.
Connection diagram 2SA-10
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Package dimensions SOIC-8
Magnetic sensitive directions
Fig.
Package dimensions magnetic sensitive directions
Dimension Pads 2SA-10 dice form
(all dimensions
2800
Y_OUT 1900
CO_OUT
X_OUT
Fig.
2SA-10 dimensions dice Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Location Disk
2.0mm
0.8mm
Fig.
2SA-10 location disk
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Applications
unique integrated two-axis Hall-sensor offers rugged, cost solution rotational reference detection. Application examples found contactless angular sensors encoders, rotational switches, brushless motors joysticks 2SA-10 applied very similar magnetoresistive angular sensors sensing rotation magnetic field component parallel with chip. However, full integration magnetic field sensor programmable signal conditioning circuit 2SA-10 offers exceptional cost effectiveness. Sentron's 2SA-10 combines advantage miniaturized angular sensor solution simultaneously higher product performance reliability. features high sensitivity, offset temperature drift meets even most demanding requirements across many industries.
Absolute Angle Sensor
2SA-10 positioned under rotating magnet mounted shaft rotating axis. magnet magnetized diametrically, that rotating shaft field through sensor also rotates. generated voltages 2SA-10 represent sine cosine magnetic field direction. Even though signal amplitudes depend upon vertical distance between sensor magnet, angle information, which calculated ratio depending this value. this manner angle sensor very robust towards sensitivity temperature drift, magnet temperature drift ageing effects well assembly tolerances.
Angular Position Sensor
Sensor Output Voltages
Vx(t) sin(w Vy(t) cos(w
Angle
Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
2SA-10
Linear Position Sensor
2SA-10 positioned vicinity underneath small permanent magnet with round shape. magnetization axis magnet perpendicular sensor plane. When magnet moves parallel plane, magnetic field sensor rotates. output signal 2SA-10 behaves like X*B/r^2 output signal like Y*B/r^2 with being coordinates magnet with respect sensor, being field strength sensor being distance between magnet sensor. magnet moves parallel x-axis, coordinate constant ratio Vx/Vy X/const. very linear measure position magnet. Using second 2SA-10 sensor principle extended very linear two-dimensional position sensing.
Output Signals Y-Axis
0.20 0.15 1.50 1.00 0.50 0.00 -0.50
Linear (X/Y)
Output voltage [mV]
0.05 0.00 -0.05 -0.10 -3.00
-1.00 -1.50 3.00
-2.00
-1.00
0.00
1.00
2.00
displacement [mm]
Position Sensor Joystick
2SA-10 positioned rotation center joystick control handle, which holds permanent magnet lower end. centered position field emanating from magnet exactly perpendicular chip surface sensor output zero soon stick inclined, sensor output becomes positive negative output signal linear with inclination angle range about inclination
Please contact documentation such application notes, technical papers others. Page
Sentron Baarerstrasse 6300 Switzerland Tel: (41) 2170 Fax: (41) 2188 www.sentron.ch sales@sentron.ch North America: Associates Tel: (650) 802-8292 Fax: (650) 802-8298 sales@gmw.com
ratio Vx/Vy
0.10

2SA-10 Integrated 2-Axis Hall Sensor Measures components magnetic

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