View 3361_278551.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

3361 AND 3362
Suffix Code 'LH' Pinning
2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
The A3361x and A3362x Hall-effect switches are extremely temperature-stable and stress-resistant sensors. Superior performance over temperature is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. The two devices differ only in output polarity; the A3361x output current goes low in the presence of a south pole of sufficient strength; the A3362x output current goes high. Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a constant-current open-collector output. An on-board regulator permits operation with supply voltages of 3.5 to 24 volts. Noise radiation is limited by control of the output current slew rate. Three package styles provide a magnetically optimized package for most applications. Suffix `xLH' is a miniature low-profile surfacemount package, `xLT' is a miniature SOT-89/TO-243AA transistor package for surface-mount applications; while suffix `xUA' is a threelead ultra-mini-SIP for through-hole mounting.
Data Sheet 27621.50
3
NC 1 2
X
GROUND NO (INTERNAL) CONNECTION
Dwg. PH-003-5
Pinning is shown viewed from branded side.
PRELIMINARY INFORMATION
(subject to change without notice) May 28, 1999
SUPPLY
FEATURES
ABSOLUTE MAXIMUM RATINGS
at TA=+25C
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 ............... +170C Operating Temperature Range, TA ............................... -40C to +85C Storage Temperature Range, TS .............................. -65C to +170C
s s s s s s
Internal Current Regulator for 2-Wire Operation Resistant to Physical Stress Superior Temperature Stability Operation From Unregulated Supply Solid-State Reliability Small Size
Always order by complete part number: the prefix 'A' + the basic four-digit part number + a suffix to indicate operating temperature range (E) + a two-letter suffix to indicate package style, e.g., A3361ELH .
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
FUNCTIONAL BLOCK DIAGRAM
SUPPLY
REG.
TO ALL SUBCIRCUITS
DYNAMIC OFFSET CANCELLATION
SAMPLE & HOLD
X
LOW-PASS FILTER
GROUND
Dwg. FH-020-6
Suffix Code 'UA' Pinning (SIP)
Suffix Code 'LT' Pinning (SOT-89/TO-243AA)
X
X
1 2
NC
1
2
3
3
GROUND
Dwg. PH-003-7
Dwg. PH-003-6
Pinning is shown viewed from branded side.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 W Copyright (c) 1999, Allegro MicroSystems, Inc.
NO (INTERNAL) CONNECTION
GROUND
OUTPUT
SUPPLY
SUPPLY
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
ELECTRICAL CHARACTERISTICS over operating temperature range.
Limits Characteristic Supply Voltage Output Current Chopping Frequency Output Settling Time Output Rise Time Output Fall Time Reverse Battery Current Symbol VCC IGND(L) IGND(H) fC tsd tr tf ICC CL = 20 pF CL = 20 pF CL = 20 pF VRCC = -16 V Test Conditions Operating Output Current Low Output Current High Min. 3.5 5.0 12 - - - - - Typ. 12 - - 340 - 3.5 3.5 - Max. 24 6.9 17 - 20 - - -15 Units V mA mA kHz s s s mA
NOTE: Typical Data is at TA = +25C and VCC = 12 V and is for design information only.
MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges.
Limits Characteristic Operate Point Release Point Hysteresis Symbol BOP BRP Bhys Test Conditions A3361 IGND goes low, A3362 high A3361 IGND goes high, A3362 low BOP - BRP Min. - 50 5.0 Typ. - - - Max. 120 - 30 Units G G G
NOTE -- Typical Data is at TA = +25C and VCC = 12 V and is for design information only.
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
This page intentionally left blank
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
SENSOR LOCATIONS
(0.005" [0.13 mm] die placement)
Package Designator "LH"
ACTIVE AREA DEPTH 0.011" 0.28 mm NOM 0.059" 1.49 mm 3 0.038" 0.96 mm
A
1 2
Package Designator "LT"
Dwg. MH-025
ACTIVE AREA DEPTH 0.030" 0.76 mm NOM
0.088" 2.24 mm 0.045" 1.14 mm
ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS
700
600
A
1 2 3
500
Suffix "UA" RJA = 206C/W
400 Suffix "LT" RJA = 258C/W 300
Dwg. MH-008-8
Package Designators "UA" and "UA-TL"
ACTIVE AREA DEPTH 0.018" 0.46 mm NOM
200
Suffix "LH" RJA = 439C/W
100
0.080" 2.04 mm
0 20 40 60
0.056" 1.44 mm
80 120 100 AMBIENT TEMPERATURE in C
140
160
Dwg. GH
180
A
BRANDED SURFACE 1 2 3
Dwg. MH-011-9A
Although sensor location is accurate to three sigma for a particular design, product improvements may result in small changes to sensor location.
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
CRITERIA FOR DEVICE QUALIFICATION
All Allegro sensors are subjected to stringent qualification requirements prior to being released to production. To become qualified, except for the destructive ESD tests, no failures are permitted. Qualification Test Biased Humidity (HAST) High-Temperature Operating Life (HTOL) Accelerated HTOL Test Method and Test Conditions TA = 130C, RH = 85% JESD22-A108, TA = 150C, TJ = 165C JESD22-A108, TA = 175C, TJ = 190C JESD22-A102, Condition C, TA = 121C, 15 psig MIL-STD-883, Method 1008, TA = 170C MIL-STD-883, Method 1010, -65C to +150C -- Test Length 50 hrs 408 hrs Samples 77 77 Comments VCC = VOUT = 5 V VCC = 24 V, VOUT = 20 V VCC = 24 V, VOUT = 20 V
504 hrs
77
Autoclave, Unbiased
96 hrs
77
High-Temperature (Bake) Storage Life Temperature Cycle
1000 hrs
77
500 cycles
77
Latch-Up
Pre/Post Reading Pre/Post Reading Pre/Post Reading --
6
Electro-Thermally Induced Gate Leakage ESD, Human Body Model Electrical Distributions
--
6
CDF-AEC-Q100-002
x per test 30
Test to failure, All leads > TBD
Per Specification
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
FUNCTIONAL DESCRIPTION
Chopper-Stabilized Technique. These devices use a proprietary dynamic offset cancellation technique, with an internal high-frequency clock to reduce the residual offset voltage of the Hall element that is normally caused by device overmolding, temperature dependencies, and thermal stress. This technique produces devices that have an extremely stable quiescent Hall output voltage, are immune to thermal stress, and have precise recoverability after temperature cycling. This technique will also slightly degrade the device output repeatability. The Hall element can be considered as a resistor array similar to a Wheatstone bridge. A large portion of the offset is a result of the mismatching of these resistors. The chopperstabilizing technique cancels the mismatching of the resistors by changing the direction of the current flowing through the Hall plate and Hall voltage measurement taps, while maintaining the Hall-voltage signal that is induced by the external magnetic flux. The signal is, then, captured by a sample-and-hold circuit. Operation. The output of these devices turns ON when a magnetic field (north pole) perpendicular to the Hall sensor exceeds the release point threshold (BRP). After turn-ON, the output will source current equal to the device operating current plus a current source (IGND(H)). When the magnetic field is increased (south pole) above the operate point (BOP), the output will source current equal to the Hall-effect sensor operating current with the current source turned OFF (IGND(L)). 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. Applications. It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor) between the supply and ground of the device to reduce both external noise and noise generated by the chopperstabilization technique. Extensive applications information on magnets and Halleffect sensors is also available in the Allegro Electronic Data Book AMS-702 or Application Note 27701 or
REG
X
B +V
--
HALL VOLTAGE
+
Dwg. AH-011-2
+I
IOUT + ICC
OUTPUT CURRENT
B RP
B OP
ICC
0 0 FLUX DENSITY +B
Dwg. GH-007-3
www.allegromicro.com
'UA' PACKAGE
X
3
0.1 F
100 SUPPLY
1
2
Dwg. EH-011-2
SAMPLE & HOLD
Dwg. EH-012
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR 'LH'
(fits SC-74A solder-pad layout) Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions)
0.122 0.114 0.018 0.012 0.083 0.073 0.022
REF 3 1 2
3.10 2.90
0.0079 0.0059 0.118 0.106 0 TO 8 0.037
BSC
0.45 0.30 2.10 1.85 0.55
REF 3 1 2
0.20 0.15 3.00 2.70 0 TO 8 0.95
BSC
0.020 MIN
0.25 MIN
0.006 0.000
0.043 0.035 0.049 0.035
Dwg. MA-010-3A in
0.15 0.00
1.10 0.90 1.25 0.90
Dwg. MA-010-3A mm
0.028
3
0.70
3
0.039 0.094
1 2
1.00 2.40
1 2
0.037
Dwg. MA-011-3 in
0.95
Dwg. MA-011-3 mm
NOTES: 1. 2. 3. 4.
Tolerances on package height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line). Exact body and lead configuration at vendor's option within limits shown. Height does not include mold gate flash. Where no tolerance is specified, dimension is nominal.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR 'LT'
(SOT-89/TO-243AA) Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions)
0.173 0.181 0.064 0.072 0.155 0.167 0.090 0.102
0.055 0.063
0.014 0.017
3.94 4.25
4.40 4.60 1.62 1.83 2.29 2.60
1.40 1.60
0.35 0.44
1
2
3
0.084 0.090
1
2
3
2.13 2.29
0.035 0.047 0.059
BSC
0.014 0.019 0.017 0.022 0.118
BSC
Dwg. MA-009-3 in
0.89 1.20 1.50
BSC
0.36 0.48 0.44 0.56 3.00
BSC
Dwg. MA-009-3 mm
0.098 0.079 B A 0.031 0.102 0.181 3 0.047 0.031
TYP
2.5 2.0 B A 0.8 2.6 4.6 1.2 0.8
TYP
1 0.028
TYP
2
1 0.7
TYP
2
3
ds 1, 2, 3, and A -- Standard SOT-89 Layout ds 1, 2, 3, and B -- Low-Stress Version ds 1, 2, and 3 only -- Lowest Stress, But Not Self Aligning
Dwg. MA-012-3 in
Pads 1, 2, 3, and A -- Standard SOT-89 Layout Pads 1, 2, 3, and B -- Low-Stress Version Pads 1, 2, and 3 only -- Lowest Stress, But Not Self Aligning
Dwg. MA-012-3 mm
NOTE: Exact body and lead configuration at vendor's option within limits shown.
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR 'UA'
Dimensions in Inches (controlling dimensions)
0.164 0.159
Dimensions in Millimeters (for reference only)
4.17 4.04
45
0.062 0.058
45
1.57 1.47
0.122 0.117 45 0.031
3.10 2.97 45 0.79
0.085
MAX
1
2
3
2.16
MAX
1
2
3
0.640 0.600
0.015
16.26 15.24
0.38
SEE NOTE
0.016
SEE NOTE
0.41
0.050
BSC
Dwg. MH-014D in
1.27
BSC
Dwg. MH-014D mm
Surface-Mount Lead Form (Suffix '-TL')
0.095
0.005
2.41
0.13
0.002
MAX
0.051
MAX
0.004 0-8
MAX
0.020
MIN FLAT
Dwg. MH-015 in
0.10
MAX
0-8 0.51
MIN FLAT
Dwg. MH-015 mm
NOTES: 1. Tolerances on package height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line). 2. Exact body and lead configuration at vendor's option within limits shown. 3. Height does not include mold gate flash. 4. Recommended minimum PWB hole diameter to clear transition area is 0.035" (0.89 mm). 5. Where no tolerance is specified, dimension is nominal.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of its products. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
3361 AND 3362 2-WIRE, CHOPPER-STABILIZED, HALL-EFFECT SWITCHES
HALL-EFFECT SENSORS SELECTION GUIDE
Partial Part Number 3240 3210 3361 3362 3161 3141 3235 5140 3142 3143 3144 3122 3123 3121 3150 Avail. Oper. Characteristics at TA = +25C Temp. BOP(max) BRP(min) Bhys(typ) Features HALL-EFFECT UNIPOLAR SWITCHES in order of BOP and Bhys E/L E E E E E/L S E E/L E/L E/L E/L E/L E/L J +50 70 +120 +120 +160 +160 +175 -25 +200 +230 +340 +350 +400 +440 +450 +40 to +850 +5.0 5.0 +50 +50 +30 +10 +25 -175 +50 +75 +165 +50 +140 +180 +125 - 10 7.7 5.0* 5.0* 20 55 15* 15* 55 55 55 55 105 105 105 20 chopper stabilized micropower, chopper stabilized 2-wire, chopper stabilized 2-wire, chopper stabilized 2-wire output 1 output 2 300 mA output Notes 1
2 2 1, 3
programmable, chopper stabilized
1
HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys 3260 E/L +30 -30 20 bipolar, chopper stabilized 3280 E/L +40 -40 45 chopper stabilized 3134 E/L +50 -50 27 bipolar switch 3133 K/L/S +75 -75 52 bipolar switch 3281 E/L +90 -90 100 chopper stabilized 3132 K/L/S +95 -95 52 bipolar switch 3187 E/L +150 -150 100* 3177 S +150 -150 200 3625 S +150 -150 200 900 mA outputs 1, 3, 5 3626 S +150 -150 200 400 mA outputs 1, 3, 5 3195 E/L +160 -160 220 1, 4 3197 L +160 -160 230 1 3175 S +170 -170 200 3188 E/L +180 -180 200* 3283 E/L +180 -180 300 chopper stabilized 3189 E/L +230 -230 100* 3275 S +250 -250 100* 5 3185 E/L +270 -270 340* Operating Temperature Ranges: S = -20C to +85C, E = -40C to +85C, J = -40C to +115C, K = -40C to +125C, L = -40C to +150C Notes 1.Protected. 2.Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dc motor control. 3. Power driver output. 4.Active pull down. 5.Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control. * Minimum. Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversal for reliable operation over operating temperature range.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

▲Up To Search▲

Price & Availability of 3361

	To Download 3361 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .