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Details, datasheet, quote on part number:3163
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Datasheet text preview:
3163
Suffix 'UA' Pinning
(ultra-mini SIP)
HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
This Hall-effect switch is a monolithic integrated circuit designed to operate continuously over extended temperatures to +85°C. The unipolar switching characteristic makes this device ideal for use with a simple bar or rod magnet. The A3163ELT and A3163EUA are identical except for package. Each device includes a voltage regulator for operation with supply voltages of 3.5 to 24 volts, reverse-battery protection, quadratic Hallvoltage generator for low offset, temperature compensation circuitry, small-signal amplifier, Schmitt trigger, and a constant-current opencollector output, wired internally for true 2-wire operation. Noise radiation is limited by control of the output-current slew rate. Two package styles provide a magnetically optimized package for most applications. Suffix `LT' is a miniature SOT89/TO-243AA transistor package for surface-mount applications; suffix `UA' is a three-lead ultra-mini SIP for through-hole mounting; it is also available with lead forming for surface-mount applications (suffix 'UA-TL').
Data Sheet 27621.31
X
1
2
3
Dwg. PH-003-7A
GROUND
GROUND
SUPPLY
FEATURES and BENEFITS
s s s s s s s s s
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ....... 26.5 V Reverse Battery Voltage, VRCC .... -16 V Magnetic Flux Density, B ..... Unlimited Package Power Dissipation, PD See Graph Junction Temperature, TJ ....... +170°C Operating Temperature Range, TA ...... -40°C to +85°C Storage Temperature Range, TS .... -65°C to +170°C
Internal Current Regulator for 2-Wire Operation Output Slew Rate Controlled 3.5 V to 24 V Operation ... Needs Only An Unregulated Supply Reverse Battery Protection Excellent Temperature Stability Activate with Small, Commercially Available Permanent Magnets Small Size Solid-State Reliability ... No Moving Parts Resistant to Physical Stress
Always order by complete part number, e.g., A3163ELT .
3163 HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
SUPPLY REG.
X
GROUND
Dwg. FH-017-1
Suffix 'LT' Pinning
(SOT89/TO-243AA)
800
ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS
700
X
Suffix "UA" RJA = 165°C/W 600 Suffix "LT" RJA = 180°C/W
500
400
NC
300
200
1
2
3
100
GROUND
0 20 40 60 100 80 120 AMBIENT TEMPERATURE in °C 140 160 180
Dwg. GH-046-6A
Dwg. PH-003-6
Pinning is shown viewed from branded side.
2
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2002 Allegro MicroSystems, Inc.
NO (INTERNAL) CONNECTION
SUPPLY
3163 HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
ELECTRICAL CHARACTERISTICS over operating voltage and temperature ranges.
Limits Characteristic Supply Voltage Output Current Symbol VCC I OUT(H) I OUT(L) Output Slew Rate Output Settling Time Reverse Battery Current di/dt t sd ICCR Test Conditions Operating B > BOP B < BR P CL = 20 pF CL = 20 pF
VRCC = -16 V
Min. 3.5 12 5.0 -- -- --
Typ. -- 14 5.6 7.0 -- --
Max. 24 17 6.9 20 20 -15
Units V mA mA mA/µs µs mA
MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges.
Limits Characteristic Operate Point (output turns on) Release Point (output turns off) Hysteresis (BOP BRP) Symbol BOP B RP B hys Min. 30 5.0 Typ. 98 79 19 Max. 160 40 Units G G G
NOTES: 1. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only. 2. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).
www.allegromicro.com
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3163 HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
TYPICAL OPERATING CHARACTERISTICS
SWITCH POINTS
120
LOAD CURRENT
20
110
OPERATE POINT, BOP VCC = 3.5 V VCC = 12 V VCC = 24 V
LOAD CURRENT (I OUT ) in mA
SWITCH POINTS in GAUSS
100
15
IOUT(H), B > BOP VCC = 24 V VCC = 12 V VCC = 3.5 V
90
10
80
70
RELEASE POINT, BRP VCC = 3.5 V VCC = 12 V VCC = 24 V
IOUT(L), B < BRP VCC = 3.5 V VCC = 12 V VCC = 24 V
5.0
60
50 -50 -25 0 25 50 75 100 125 150
0 -50
-25
0
25
50
75
100
125
150
AMBIENT TEMPERATURE in ° C
Dwg. GH-044-5
AMBIENT TEMPERATURE in ° C
Dwg. GH-028-10
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115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3163 HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
(±0.005" [0.13 mm] die placement)
Suffix "LT"
ACTIVE AREA DEPTH 0.0305" 0.775 mm NOM 0.088" 2.24 mm 0.045" 1.14 mm
SENSOR LOCATIONS
FUNCTIONAL DESCRIPTION
Operation. The output of these devices turns on when a magnetic field (south pole) perpendicular to the Hall sensor exceeds the operate point threshold (BOP). After turn on, the output will source current (IOUT(H)) equal to the device operating current plus a current source. When the magnetic field is decreased (south pole) below the release point (BRP), the output will source current (IOUT(L)) equal to the Hall-effect sensor operating current with the current source turned off. The difference in the magnetic operate and release points is the hysteresis (Bhys) of the device. The hysteresis allows clean switching of the output even in the presence of external mechanical vibration or electrical noise. Powering up in the absence of a magnetic field (less than BOP and higher than BRP) will allow an indeterminate output state. The correct state is warranted after the first excursion beyond BOP or BRP.
0.056" 1.44 mm
A
1 2 3
Dwg. MH-008-8A
Suffix "UA"
ACTIVE AREA DEPTH 0.0195" 0.50 mm NOM 0.080" 2.04 mm
A
BRANDED SURFACE 1 2 3
+I
Dwg. MH-011-9B
IOUT(H)
OUTPUT CURRENT
Allegro
B RP
B OP
IOUT(L)
0 0 FLUX DENSITY +B
Dwg. GH-007-8
www.allegromicro.com
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