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查询3260供应商
Data Sheet
27631.50
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT BIPOLAR SWITCH
Suffix Code 'LH' Pinning
3
X
NC
12
SUPPLY
Dwg. PH-003-5
Pinning is shown viewed from branded side.
GROUND
NO (INTERNAL)
CONNECTION
ADVANCE INFORMATION
(subject to change without notice)
June 30, 2000
The A3260-- Hall-effect bipolar switch is an extremely
temperature-stable and stress-resistant sensor especially suited for
operation over extended temperature ranges to +150°C. Superior
high-temperature performance is made possible through dynamic
offset cancellation, which reduces the residual offset voltage normally
caused by device overmolding, temperature dependencies, and thermal
stress.
The 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. A south
pole of sufficient strength will turn the output OFF. 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.
The first character of the part number suffix determines the device
operating temperature range; suffix ‘E–’ is -40°C to +85°C and ‘L–’ is
-40°C to +150°C. Three package styles provide a magnetically optimized package for most applications. Suffix ‘–LH’ is a miniature lowprofile surface-mount package, ‘–LT’ is a miniature SOT-89/TO243AA transistor package for surface-mount applications; while suffix
‘–UA’ is a three-lead ultra-mini-SIP for through-hole mounting.
ABSOLUTE MAXIMUM RATINGS
at TA=+25°C
Supply Voltage, VCC........................... 27 V
Reverse Battery Voltage, V
Magnetic Flux Density, B ........... Unlimited
Package Power Dissipation, PD. See Graph
Junction Temperature, TJ............... +170°C
Operating Temperature Range, T
Suffix ‘E–’ .................. -40°C to +85°C
Suffix ‘L–’ ................ -40°C to +150°C
Storage Temperature Range,
TS.............................. -65°C to +170°C
.......... -16 V
RCC
A
FEATURES
■ Internal Current Regulator for 2-Wire Operation
■ Output Slew Rate Controlled
■ Resistant to Physical Stress
■ Superior Temperature Stability
■ Operation From Unregulated Supply
■ Reverse Battery Protection
■ 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 +
a suffix to indicate package style, e.g., A3260ELH .
Page 2
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
FUNCTIONAL BLOCK DIAGRAM
SUPPLY
REG.
X
DYNAMIC
OFFSET CANCELLATION
Suffix Code 'UA' Pinning
(SIP)
X
TO ALL
SUBCIRCUITS
& HOLD
SAMPLE
GROUND
FILTER
LOW-PASS
Dwg. FH-020-4
Suffix Code 'LT' Pinning
(SOT-89/TO-243AA)
X
NC
1
SUPPLY
Dwg. PH-003-7A
32
GROUND
GROUND
1
SUPPLY
Dwg. PH-003-6
32
GROUND
NO (INTERNAL)
CONNECTION
Pinning is shown viewed from branded side.
2
115 Northeast Cutoff, Box 15036
W
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.
Page 3
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
ELECTRICAL CHARACTERISTICS over operating temperature range.
Limits
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Supply Voltage V
Output Current I
GND(L)
I
GND(H)
Chopping Frequency f
CC
C
Operating 3.5 12 24 V
B > B
B < B
OP
RP
-4.0 -6.5 -8.0 mA
-11 -14.5 -18 mA
– 340 – kHz
Output Slew Rate di/dt CL = 20 pF 0.5 — 2.0 mA/µs
Output Settling Time t
Reverse Battery Current I
NOTES:1. . BOP = operate point (output turns OFF); BRP = release point (output turns ON).
2. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only.
sd
CC
CL = 20 pF — — 20 µs
V
= -16 V – – -15 mA
RCC
MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges.
Limits
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Operate Point B
Release Point B
Hysteresis B
OP
RP
hys
BOP - B
RP
–1030 G
-30 -10 – G
–20– G
NOTE — Typical Data is at TA = +25°C and VCC = 12 V and is for design information only.
www.allegromicro.com
3
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3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
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4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Page 5
SENSOR LOCATIONS
(±0.005” [0.13 mm] die placement)
Package Designator “LH”
ACTIVE AREA DEPTH
0.011"
0.28 mm
NOM
3
0.059"
1.49 mm
A
1 2
Package Designator “LT”
0.038"
0.96 mm
Dwg. MH-025
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
Allegro
ACTIVE AREA DEPTH
0.030"
0.76 mm
NOM
0.088"
2.24 mm
0.045"
1.14 mm
A
1 32
Dwg. MH-008-8
Package Designators “UA” and "UA-TL"
ACTIVE AREA DEPTH
0.018"
0.46 mm
NOM
0.080"
2.04 mm
0.056"
1.44 mm
A
BRANDED
SURFACE
1 32
700
600
500
400
300
200
100
ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS
0
20 60 100 140
Suffix "–LT"
R
θJA
= 258°C/W
40 80 120 180
Suffix "–UA"
θJA
= 206°C/W
R
Suffix "–LH"
R
θJA
Suffix "E–"
AMBIENT TEMPERATURE in °C
= 248°C/W
Suffix "L–"
160
Dwg. GH-046-2C
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.
www.allegromicro.com
5
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3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
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 Test Method and Test Conditions Test Length Samples Comments
Biased Humidity (HAST) TA = 130°C, RH = 85% 50 hrs 77 VCC = V
High-Temperature JESD22-A108, 408 hrs 77 V
Operating Life (HTOL) TA = 150°C, TJ ≤ 165°CV
Accelerated HTOL TA = 175°C, TJ = 190°C 504 hrs 77 VCC = 24 V,
Autoclave, Unbiased JESD22-A102, Condition C, 96 hrs 77
TA = 121°C, 15 psig
High-Temperature MIL-STD-883, Method 1008, 1000 hrs 77
(Bake) Storage Life TA = 170°C
Temperature Cycle MIL-STD-883, Method 1010, 500 cycles 77
-65°C to +150°C
Latch-Up — Pre/Post 6
Reading
Electro-Thermally — Pre/Post 6
Induced Gate Leakage Reading
ESD, CDF-AEC-Q100-002 Pre/Post x per Test to failure,
Human Body Model Reading test All leads > TBD
V
CC
OUT
OUT
= 24 V,
OUT
= 20 V
= 20 V
= 5 V
Electrical Distributions Per Specification — 30
6
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Page 7
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
FUNCTIONAL DESCRIPTION
3260
BIPOLAR SWITCH
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 (I
). When the magnetic field is
GND(H)
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 (I
GND(L)
). The
difference in the magnetic operate and release points is the
hysteresis (B
) of the device. The hysteresis allows clean
hys
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.
'UA' PACKAGE
X
3
B
+V
+I
OUTPUT CURRENT
I
CC
0
-B
0.95 V
REG
—
HALL
VOLTAGE
+
Dwg. AH-011-2
B
RP
FLUX DENSITY
–
+
X
I
OUT
+ I
CC
B
OP
0 +B
Dwg. GH-034-6
& HOLD
SAMPLE
Dwg. EH-012
www.allegromicro.com
2
1
0.1 µF
100 Ω
SUPPLY
Dwg. EH-011-2A
7
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3260
7
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
PACKAGE DESIGNATOR 'LH'
(fits SC-74A solder-pad layout)
0.083
0.073
0.022
REF
0.006
0.000
0.122
0.114
0.020
0.012
12
Dimensions in Inches
(for reference only)
3
0.118
0.106
0.037
BSC
0.043
0.035
0.049
0.035
0° TO 8°
0.0079
0.0050
0.020
MIN
Dwg. MA-010-3B in
0.55
REF
0.15
0.00
2.10
1.85
Dimensions in Millimeters
3.10
2.90
0.50
0.30
3
12
(controlling dimensions)
3.00
2.70
0° TO 8°
0.95
BSC
1.10
0.90
1.25
0.90
0.20
0.127
0.25
MIN
Dwg. MA-010-3B mm
0.028
3
0.039
0.094
12
0.03
Dwg. MA-011-3 in
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. Where no tolerance is specified, dimension is nominal.
8
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
1.00
0.70
3
2.40
12
0.95
Dwg. MA-011-3 mm
Page 9
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
PACKAGE DESIGNATOR 'LT'
(SOT-89/TO-243AA)
3260
BIPOLAR SWITCH
0.167
0.155
0.047
0.035
0.059
BSC
1
Dimensions in Inches
(for reference only)
0.181
0.173
0.072
0.064
0.102
0.0221
0.0173
0.090
0.0189
0.0142
23
0.118
BSC
0.063
0.055
0.090
0.084
0.0173
0.0138
Dwg. MA-009-3A in
4.25
3.94
1.20
0.89
1.50
BSC
Dimensions in Millimeters
(controlling dimensions)
4.60
4.40
1.83
1.62
2.60
0.56
0.44
2.29
0.48
0.36
1
23
3.00
BSC
1.60
1.40
2.29
2.13
0.44
0.35
Dwg. MA-009-3A mm
0.098
0.079
B
1
0.028
TYP
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
0.031
3
0.102
0.047
0.031
TYP
0.181
Dwg. MA-012-3 in
A
2
NOTE: Exact body and lead configuration at vendor’s option within limits shown.
www.allegromicro.com
2.5
2.0
B
13
0.7
TYP
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
0.8
A
2
2.6
1.2
0.8
TYP
4.6
Dwg. MA-012-3 mm
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3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
PACKAGE DESIGNATOR 'UA'
SEE NOTE
Dimensions in Inches
(controlling dimensions)
0.164
0.159
45°
0.122
0.117
0.085
123
MAX
0.640
0.600
0.062
0.058
0.031
0.0189
0.0142
0.0173
0.0138
45°
SEE NOTE
Dimensions in Millimeters
(for reference only)
4.17
4.04
45°
3.10
2.97
2.16
123
MAX
16.26
15.24
1.57
1.47
45°
0.79
0.44
0.35
0.48
0.36
0.050
BSC
Dwg. MH-014E in
1.27
BSC
Dwg. MH-014E mm
Surface-Mount Lead Form (Suffix '-TL')
0.095
±0.005
0.004
MAX
0.002
MAX
0°–8°
0.020
MIN
FLAT
Dwg. MH-015 in
0.10
MAX
0.051
MAX
0°–8°
0.51
MIN
FLAT
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.
10
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2.41
±0.13
Dwg. MH-015 mm
Page 11
3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
www.allegromicro.com
The products described herein are manufactured under one or
more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283;
5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719;
5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents
pending.
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 performance, reliability, or
manufacturability of its products. Before placing an order, the user is
cautioned to verify that the information being relied upon is current.
Allegro products are not authorized for use as critical components
in life-support appliances, devices, or systems without express written
approval.
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 that may result from its use.
11
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3260
2-WIRE, CHOPPER-STABILIZED,
PRECISION HALL-EFFECT
BIPOLAR SWITCH
HALL-EFFECT SENSORS
Partial Part Avail. Oper. Characteristics at TA = +25°C
Number Temp. B
HALL-EFFECT UNIPOLAR SWITCHES in order of B
3240 E/L +50 +5.0 10 chopper stabilized 1
3209 E ±60 ±5.0 7.7 400 µW, chopper stabilized
3210 E ±60 ±5.0 7.7 25 µW, chopper stabilized
3361 E +55* +110‡ 5.0* 2-wire, chopper stabilized
3362 E +110 +55 5.0* 2-wire, chopper stabilized
3161 E +160 +30 20 2-wire
3141 E/L +160 +10 55
3235 S +175 +25 15* output 1 2
5140 E +200 +50 55 300 mA output 1, 3
3142 E/L +230 +75 55
3143 E/L +340 +165 55
3144 E/L +350 +50 55
3122 E/L +400 +140 105
3123 E/L +440 +180 105
3121 E/L +450 +125 105
3150 J +40 to +850 – 20
OP(max)BRP(min)
-25 -175 15* output 2 2
B
hys(typ)
Features Notes
and B
OP
programmable, chopper stabilized
hys
1
HALL-EFFECT LATCHES & BIPOLAR SWITCHES† in order of B
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 = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C
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. ‡ Maximum
† 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.
OP
and B
hys
12
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
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