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3209 AND 3210
Package Suffix `LH' Pinning
3
MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
The A3209Ex and A3210Ex integrated circuits are ultra-sensitive, pole independent Hall-effect switches with a latched digital output. They are especially suited for operation in battery-operated, hand-held equipment such as cellular and cordless telephones, pagers, and palmtop computers. 2.5 volt to 3.5 volt operation and a unique clocking scheme to reduce the average operating power requirements - the A3209Ex to 400 W, the A3210Ex to 25 W! Except for operating duty cycle and average operating current, the A3209Ex and A3210Ex are identical. Unlike other Hall-effect switches, either a north or south pole of sufficient strength will turn the output on; in the absence of a magnetic field, the output is off. The polarity independence and minimal power requirement allows these devices to easily replace reed switches for superior reliability and ease of manufacturing, while eliminating the requirement for signal conditioning. Improved stability is made possible through chopper stabilization (dynamic offset cancellation), which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress. These devices include on a single silicon chip a Hall-voltage generator, small-signal amplifier, chopper stabilization, a latch, and a MOSFET output. Advanced BiCMOS processing is used to take advantage of low-voltage and low-power requirements, component matching, very low input-offset errors, and small component geometries. The A3209Ex and A3210Ex are rated for operation over a temperature range of -40C to +85C. Two package styles provide a magnetically optimized package for most applications. Suffix `LH' is a miniature low-profile surface-mount package while suffix `UA' is a three-lead ultra-mini-SIP for through-hole or surface mounting.
Data Sheet 27622.60A
V
DD
1
X
2
GROUND
Dwg. PH-016-1
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25C Supply Voltage, VDD ............................. 5 V Magnetic Flux Density, B .......... Unlimited Output Off Voltage, VOUT ..................... 5 V Output Current, IOUT .......................... 1 mA Junction Temperature, TJ ............... +170C Operating Temperature Range, TA ............................... -40C to +85C Storage Temperature Range, TS .............................. -65C to +170C
Caution: These CMOS devices have input static protection (Class 3) but are still susceptible to damage if exposed to extremely high static electrical charges.
OUTPUT
SUPPLY
FEATURES
I I I I Micropower Operation Operate With North or South Pole 2.5 V to 3.5 V Battery Operation Chopper Stabilized Superior Temperature Stability Extremely Low Switch-Point Drift Insensitive to Physical Stress ESD Protected to 5 kV Solid-State Reliability Small Size Easily Manufacturable With Magnet Pole Independence
I I I I
Always order by complete part number: the prefix `A' + the basic four-digit part number + the suffix `E' to indicate operating temperature range + a suffix to indicate package style, e.g., A3210ELH .
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
FUNCTIONAL BLOCK DIAGRAM
SUPPLY
SWITCH
TIMING LOGIC
DYNAMIC OFFSET CANCELLATION
OUTPUT
SAMPLE & HOLD
LATCH
X
GROUND
Dwg. FH-020-5
Package Suffix `UA' Pinning
700
ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS
600
Suffix "UA" RJA = 206C/W
500
400
V
Suffix "LH" RJA = 248C/W
DD
300
1
X
2
3
200
GROUND
100
0 20 40 60 100 80 120 AMBIENT TEMPERATURE in C 140 160 180
Dwg. GH-046-3A
Dwg. PH-016
Pinning is shown viewed from branded side.
2
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 2000, Allegro MicroSystems, Inc.
OUTPUT
SUPPLY
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
ELECTRICAL CHARACTERISTICS with CBYPASS = 0.1 F, over operating voltage and temperature range (unless otherwise specified).
Limits Characteristic Supply Voltage Range Output Leakage Current Output On Voltage Awake Time Period Symbol VDD IOFF VOUT tawake tperiod A3209Ex A3210Ex Duty Cycle d.c. A3209Ex A3210Ex Chopping Frequency Supply Current (2.5 VDD 3.5 V) fC IDD(EN) IDD(DIS) IDD(AVG) Chip awake (enabled) Chip asleep (disabled) A3209Ex, VDD = 2.75 V A3209Ex, VDD = 3.5 V A3210Ex, VDD = 2.75 V A3210Ex, VDD = 3.5 V NOTES: 1. Operate and release points will vary with supply voltage. 2. BOPx = operate point (output turns ON); BRPx = release point (output turns OFF). 3. Typical Data is at TA = +25C and VDD = 2.75 V and is for design information only. Test Conditions Operating1) VOUT = 3.5 V, BRPN < B < BRPS IOUT = 1 mA, VDD = 2.5 V Min. 2.5 - - 30 240 30 - - - 0.1 1.0 - - - - Typ. 2.75 1.0 105 60 480 60 12.5 0.10 340 - 10 145 195 8.8 13 Max. 3.5 1.0 300 90 720 90 - - - 3.0 50 425 425 25 60 Units V A mV s s ms % % kHz mA A A A A A
MAGNETIC CHARACTERISTICS with CBYPASS = 0.1 F, over operating voltage and temperature range (unless otherwise specified).
Limits Characteristic Operate Points Symbol BOPS BOPN Release Points BRPS BRPN Hysteresis Bhys Test Conditions South pole to branded side North pole to branded side South pole to branded side North pole to branded side |BOPx - BRPx| Min. - -60 5.0 - - Typ. 30 -35 22 -27 7.7 Max. 60 - - -5.0 - Units G G G G G
NOTES: 1. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G. 2. Typical Data is at TA = +25C and VDD = 2.75 V and is for design information only.
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3
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
TYPICAL OPERATING CHARACTERISTICS as a function of temperature
SWITCH POINTS
60
40
SWITCH POINTS IN GAUSS
BOPS
20
BRPS
0
VDD = 2.75 V
-20
BRPN BOPN
-40
-60 -50
-25
0
25
50
75
100
Dwg. GH-027-2
AMBIENT TEMPERATURE IN C
A3209-- SUPPLY CURRENT
220
A3210-- SUPPLY CURRENT
16
AVERAGE SUPPLY CURRENT IN A
VDD = 3.5 V
AVERAGE SUPPLY CURRENT IN A
200
14
VDD = 3.5 V
180
12
VDD = 3 V
160
10
VDD = 3 V
VDD = 2.5 V
140
VDD = 2.5 V
8.0
120 -50
-25
0
25
50
75
100
Dwg. GH-028-7
6.0 -50
-25
0
25
50
75
100
Dwg. GH-028-6
AMBIENT TEMPERATURE IN C
AMBIENT TEMPERATURE IN C
4
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
TYPICAL OPERATING CHARACTERISTICS as a function of supply voltage
SWITCH POINTS
60
40
BOPS BRPS
SWITCH POINTS IN GAUSS
20
0
TA = 25C
-20
BRPN BOPN
-40
-60 2.4
2.6
2.8
3.0
3.2
3.4
3.6
Dwg. GH-057-1
SUPPLY VOLTAGE IN VOLTS
A3209-- SUPPLY CURRENT
220
A3210-- SUPPLY CURRENT
16
AVERAGE SUPPLY CURRENT IN A
180
AVERAGE SUPPLY CURRENT IN A
200
14
12
160
10
140
TA = 25C
8.0
TA = 25C
120 2.4
2.6
2.8
3.0
3.2
3.4
3.6
Dwg. GH-058-6
6.0 2.4
2.6
2.8
3.0
3.2
3.4
3.6
Dwg. GH-058-5A
SUPPLY VOLTAGE IN VOLTS
SUPPLY VOLTAGE IN VOLTS
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5
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE 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 TA = 175C, TJ 190C Test Length 50 hrs 408 hrs Samples 77 77 Comments VDD = VOUT = 3 V VDD = VOUT = 3 V
504 hrs
77
VDD = VOUT = 3 V
Autoclave, Unbiased
JESD22-A102, Condition C, TA = 121C, 15 psig MIL-STD-883, Method 1008, TA = 170C MIL-STD-883, Method 1010, -65C to +150C --
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 Pre/Post Reading --
6
Electro-Thermally Induced Gate Leakage ESD, Human Body Model ESD, Machine Model Electrical Distributions
--
6
CDF-AEC-Q100-002
3 per test 3 per test 30
Test to failure, All leads > 5 kV Test to failure, All leads > 350 V
JESD22-A115
Per Specification
6
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
FUNCTIONAL DESCRIPTION
Low Average Power. Internal timing circuitry activates the sensor for 60 s and deactivates it for the remainder of the period (480 s for the A3209Ex and 60 ms for the A3210Ex). A short "awake" time allows for stabilization prior to the sensor sampling and data latching on the falling edge of the timing pulse. The output during the "sleep" time is latched in the last sampled state. The supply current is not affected by the output state.
PERIOD 60 s - "AWAKE"
+V
SAMPLE & HOLD
X
IDD(EN)
"SLEEP" SAMPLE & OUTPUT LATCHED
Dwg. EH-012-1
IDD(DIS)
0
Dwg. WH-017-1
B +V
Chopper-Stabilized Technique. 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. 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. The chopper-stabilizing technique cancels the mismatching of the resistor circuit by changing the direction of the current flowing through the Hall plate using CMOS switches and Hall voltage measurement taps, while maintaing the Hall-voltage signal that is induced by the external magnetic flux. The signal is then captured by a sample-andhold circuit and further processed using low-offset bipolar circuitry. 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. A relatively high sampling frequency is used in order that faster signals can be processed. More detailed descriptions of the circuit operation can be found in: Technical Paper STP 97-10, Monolithic Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancellation and Technical Paper STP 99-1, Chopper-Stabilized Amplifiers With A Track-and-Hold Signal Demodulator.
--
HALL VOLTAGE
+
Dwg. AH-011-2
Operation. The output of this device switches low (turns on) when a magnetic field perpendicular to the Hall sensor exceeds the operate point BOPS (or is less than BOPN). After turn-on, the output is capable of sinking up to 1 mA and the output voltage is VOUT(ON). When the magnetic field is reduced below the release point BRPS (or increased above BRPN), the device output switches high (turns off). The difference in the magnetic operate and release points is the hysteresis (Bhys) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G.
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7
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
SENSOR LOCATIONS
5V MAX OUTPUT OFF B OPN B OPS
(0.005" [0.13 mm] die placement)
OUTPUT VOLTAGE
Package Designator `LH'
ACTIVE AREA DEPTH 0.011" 0.28 mm NOM
0.059" 1.49 mm 3 0.038" 0.96 mm
BRPN 0 -B 0
BRPS
OUTPUT ON
+B
Dwg. GH-043-1
A
1 2
Dwg. MH-025
MAGNETIC FLUX
Applications. Allegro's pole-independent sensing technique allows for operation with either a north pole or south pole magnet orientation, enhancing the manufacturability of the device. The state-of-the-art technology provides the same output polarity for either pole face. 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 chopper-stabilization technique. This is especially true due to the relatively high impedance of battery supplies. The simplest form of magnet that will operate these devices is a bar magnet with either pole near the branded surface of the device. Many other methods of operation are possible. Extensive applications information on magnets and Hall-effect sensors is also available in the Allegro Electronic Data Book AMS-702 or Application Note 27701, or at
Package Designators `UA', UA-LC', and `UA-TL'
ACTIVE AREA DEPTH 0.018" 0.46 mm NOM
0.081" 2.06 mm
0.057" 1.45 mm
A
BRANDED SURFACE 1 2 3
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Dwg. MH-011-11
OUTPUT 10 pF
Although sensor location is accurate to three sigma for a particular design, product improvements may result in small changes to sensor location.
2
DD
50 k
SUPPLY (3 V BATTERY) 0.1 F
Dwg. EH-013-2
3
V
1
8
X
Allegro
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE 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 0.020 0.012 0.083 0.073 0.022
REF 3 1 2
3.10 2.90
0.0079 0.0050 0.118 0.106 0 TO 8 0.037
BSC
0.50 0.30 2.10 1.85 0.55
REF 3 1 2
0.20 0.127 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-010-3B in
0.15 0.00
1.10 0.90 1.25 0.90
Dwg. MA-010-3B mm
0.028
3
3
0.70 1.00
0.039 0.094
1 2
2.40
1 2
0.037
Dwg. MA-011-3 in
0.95
Dwg. MA-011-3 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. Where no tolerance is specified, dimension is nominal.
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9
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR `UA'
Dimensions in Inches (controlling dimensions) Dimensions in Millimeters (for reference only)
0.164 0.159
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
0.0173 0.0138
16.26 15.24
0.44 0.35
SEE NOTE
0.0189 0.0142
SEE NOTE
0.48 0.36
0.050
BSC
Dwg. MH-014E in
1.27
BSC
Dwg. MH-014E 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.
10
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
Surface-Mount Lead Form (order A32xxEUA-TL)
Dimensions in Inches (controlling dimensions) Dimensions in Millimeters (for reference only)
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
Radial Lead Form (order A32xxEUA-LC)
1
2
3
0.620" 0.500" (15.7 mm 12.7 mm)
0.108" (2.74 mm)
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.
0.100" (2.5 mm)
Dwg. MH-026
NOTE: Lead-form dimensions are the nominals produced on the forming equipment. No dimensional tolerance is implied or guaranteed for bulk packaging (500 pieces per bag).
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.
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11
3209 AND 3210 MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES
HALL-EFFECT SENSORS
Partial Part Number 3240 3209 3210 3361 3362 3161 3141 3235 5140 3142 3143 3144 3122 3123 3121 Avail. Oper. Characteristics at TA = +25C Temp. BOP max BRP min Bhys typ Features HALL-EFFECT UNIPOLAR & OMNIPOLAR SWITCHES in order of BOP and Bhys E/L E E E E E E/L S E E/L E/L E/L E/L E/L E/L +50 60 60 +125 +125 +160 +160 +175 -25 +200 +230 +340 +350 +400 +440 +450 +5.0 5.0 5.0 +40 +40 +30 +10 +25 -175 +50 +75 +165 +50 +140 +180 +125 10 7.7 7.7 5.0* 5.0* 20 55 15* 15* 55 55 55 55 105 105 105 Notes
chopper stabilized 1 400 W, chopper stabilized 25 W, chopper stabilized 2-wire, chopper stabilized, inverted output 2-wire, chopper stabilized 2-wire output 1 output 2 300 mA power driver output 2 2 1
HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys 3260 E/L +30 -30 20 bipolar switch, 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 power driver output 1, 3 3626 S +150 -150 200 400 mA power driver output 1, 3 3195 E/L +160 -160 220 active pulldown 1 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* 3 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. Outputs may be tied together for omnipolar operation. 3. 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.
12
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

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