A3210-UA [ALLEGRO]
MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES; 微功耗，超敏感的霍尔效应开关
| 型号： | A3210-UA |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES |
| 文件： | 总12页 (文件大小：224K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
3210 AND
3209
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 operat-
ing power requirements – the A3209Ex to 400 µW, the A3210Ex to 25 µW!
Except for operating duty cycle and average operating current, the A3209Ex
and A3210Ex are identical.
Package Suffix ‘LH’ Pinning
3
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.
V
DD
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.
1
2
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.
Dwg. PH-016-1
The A3209Ex and A3210Ex are rated for operation over a temperature
range of -40°C to +85°C. Two package styles provide a magnetically opti-
mized 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.
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at T = +25°C
A
FEATURES
I Micropower Operation
Supply Voltage, VDD ............................. 5 V
Magnetic Flux Density, B .......... Unlimited
Output Off Voltage, VOUT ..................... 5 V
Output Current, IOUT .......................... 1 mA
Junction Temperature, TJ ............... +170°C
I Operate With North or South Pole
I 2.5 V to 3.5 V Battery Operation
I Chopper Stabilized
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
Operating Temperature Range,
I ESD Protected to 5 kV
I Solid-State Reliability
TA ............................... -40°C to +85°C
Storage Temperature Range,
I Small Size
TS .............................. -65°C to +170°C
I Easily Manufacturable With Magnet Pole Independence
Caution: These CMOS devices have input
static protection (Class 3) but are still
susceptible to damage if exposed to
extremely high static electrical charges.
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
OUTPUT
GROUND
X
Dwg. FH-020-5
Package Suffix ‘UA’ Pinning
700
600
500
400
300
Suffix "UA"
R
θJA = 206°C/W
V
DD
Suffix "LH"
θJA = 248°C/W
R
1
2
3
200
100
0
Dwg. PH-016
20
40
60
80
100
120
140
160
180
AMBIENT TEMPERATURE in °C
Pinning is shown viewed from branded side.
Dwg. GH-046-3A
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2000, Allegro MicroSystems, Inc.
2
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
ELECTRICAL CHARACTERISTICS with CBYPASS = 0.1 µF,
over operating voltage and temperature range (unless otherwise specified).
Limits
Characteristic
Symbol
VDD
Test Conditions
Min.
2.5
–
Typ.
Max.
3.5
1.0
300
90
Units
V
Supply Voltage Range
Output Leakage Current
Output On Voltage
Awake Time
Operating1)
2.75
«1.0
105
60
IOFF
VOUT = 3.5 V, BRPN < B < BRPS
IOUT = 1 mA, VDD = 2.5 V
µA
mV
µs
VOUT
tawake
tperiod
–
30
240
30
–
Period
A3209Ex
A3210Ex
A3209Ex
A3210Ex
480
60
720
90
µs
ms
%
Duty Cycle
d.c.
12.5
0.10
340
–
–
–
–
%
Chopping Frequency
fC
–
–
kHz
mA
µA
µA
Supply Current
IDD(EN)
IDD(DIS)
IDD(AVG)
Chip awake (enabled)
Chip asleep (disabled)
A3209Ex, VDD = 2.75 V
0.1
1.0
–
3.0
50
(2.5 ≤ VDD ≤3.5 V)
10
145
425
A3209Ex, VDD = 3.5 V
A3210Ex, VDD = 2.75 V
A3210Ex, VDD = 3.5 V
–
–
–
195
8.8
13
425
25
µA
µA
µA
60
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 = +25°C and VDD = 2.75 V and is for design information only.
MAGNETIC CHARACTERISTICS with CBYPASS = 0.1 µF,
over operating voltage and temperature range (unless otherwise specified).
Limits
Characteristic
Symbol
BOPS
BOPN
BRPS
Test Conditions
Min.
–
Typ.
30
Max.
60
–
Units
G
Operate Points
South pole to branded side
North pole to branded side
South pole to branded side
North pole to branded side
-60
5.0
–
-35
22
G
Release Points
Hysteresis
–
G
BRPN
Bhys
-27
7.7
-5.0
–
G
|BOPx - BRPx
|
–
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 = +25°C and VDD = 2.75 V and is for design information only.
www.allegromicro.com
3
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
TYPICAL OPERATING CHARACTERISTICS
as a function of temperature
SWITCH POINTS
60
40
B
OPS
BRPS
20
0
VDD = 2.75 V
-20
-40
-60
BRPN
BOPN
-50
-25
0
25
50
75
100
AMBIENT TEMPERATURE IN °C
Dwg. GH-027-2
A3209-- SUPPLY CURRENT
A3210-- SUPPLY CURRENT
16
14
220
200
180
160
140
120
V
DD = 3.5 V
VDD = 3.5 V
12
V
DD = 3 V
VDD = 2.5 V
10
VDD = 3 V
V
DD = 2.5 V
8.0
6.0
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
AMBIENT TEMPERATURE IN °C
AMBIENT TEMPERATURE IN °C
Dwg. GH-028-7
Dwg. GH-028-6
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
4
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
TYPICAL OPERATING CHARACTERISTICS
as a function of supply voltage
SWITCH POINTS
60
40
BOPS
BRPS
20
0
TA = 25°C
-20
-40
-60
BRPN
BOPN
2.4
2.6
2.8
3.0
3.2
3.4
3.6
SUPPLY VOLTAGE IN VOLTS
Dwg. GH-057-1
A3209-- SUPPLY CURRENT
A3210-- SUPPLY CURRENT
220
16
14
200
180
160
140
120
12
10
TA = 25°C
TA = 25°C
8.0
6.0
2.4
2.6
2.8
3.0
3.2
3.4
3.6
2.4
2.6
2.8
3.0
3.2
3.4
3.6
SUPPLY VOLTAGE IN VOLTS
SUPPLY VOLTAGE IN VOLTS
Dwg. GH-058-6
Dwg. GH-058-5A
www.allegromicro.com
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
Test Method and Test Conditions
Test Length
50 hrs
Samples
Comments
Biased Humidity (HAST) TA = 130°C, RH = 85%
77
77
VDD = VOUT = 3 V
VDD = VOUT = 3 V
High-Temperature
JESD22-A108,
408 hrs
Operating Life (HTOL)
TA = 150°C, TJ ≤ 165°C
Accelerated HTOL
TA = 175°C, TJ ≤ 190°C
504 hrs
96 hrs
77
77
77
77
6
VDD = VOUT = 3 V
Autoclave, Unbiased
JESD22-A102, Condition C,
TA = 121°C, 15 psig
High-Temperature
(Bake) Storage Life
MIL-STD-883, Method 1008,
TA = 170°C
1000 hrs
500 cycles
Temperature Cycle
MIL-STD-883, Method 1010,
-65°C to +150°C
Latch-Up
—
Pre/Post
Reading
Electro-Thermally
Induced Gate Leakage
—
Pre/Post
Reading
6
ESD,
Human Body Model
CDF-AEC-Q100-002
JESD22-A115
Per Specification
Pre/Post
Reading
3 per
test
Test to failure,
All leads > 5 kV
ESD,
Machine Model
Pre/Post
Reading
3 per
test
Test to failure,
All leads > 350 V
Electrical Distributions
—
30
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
6
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
FUNCTIONAL DESCRIPTION
Low Average Power. Internal timing circuitry activates the
sensor for 60 µs and deactivates it for the remainder of the
period (480 µs 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.
+V
X
PERIOD
60 µs - "AWAKE"
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 dependen-
cies, 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-and-
hold 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.
—
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.
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.
As used here, negative flux densities are defined as less
than zero (algebraic convention) and -50 G is less than +10 G.
www.allegromicro.com
7
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
SENSOR LOCATIONS
( 0.005” [0.13 mm] die placement)
OUTPUT OFF
5 V
MAX
B
B
OPN
OPS
Package Designator ‘LH’
ACTIVE AREA DEPTH
0.011"
0.059"
0.28 mm
1.49 mm
NOM
3
0.038"
0.96 mm
B
B
RPS
RPN
OUTPUT ON
0
0
A
-B
+B
MAGNETIC FLUX
1
2
Dwg. GH-043-1
Dwg. MH-025
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.
Package Designators ‘UA’, UA-LC', and ‘UA-TL’
It is strongly recommended that an external bypass capaci-
tor 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 tech-
nique. This is especially true due to the relatively high imped-
ance of battery supplies.
ACTIVE AREA DEPTH
0.018"
0.081"
0.46 mm
2.06 mm
NOM
0.057"
1.45 mm
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. Exten-
sive 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
A
BRANDED
SURFACE
1
2
3
www.allegromicro.com
Dwg. MH-011-11
Although sensor location is accurate to three sigma for a
particular design, product improvements may result in small
changes to sensor location.
OUTPUT
10 pF
X
SUPPLY
(3 V BATTERY)
0.1 µF
Dwg. EH-013-2
Allegro
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
8
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)
3.10
2.90
0.122
0.114
0.50
0.30
0.20
0.127
0.020
0.012
0.0079
0.0050
3
3
2.10
1.85
0.083
0.073
3.00
2.70
0.118
0.106
0.25 MIN
0.020 MIN
1
2
1
2
0.022
0.55
0° TO 8°
0° TO 8°
REF
REF
0.037
0.95
BSC
BSC
0.043
0.035
0.049
0.035
1.10
0.90
0.006
0.000
0.15
0.00
1.25
0.90
Dwg. MA-010-3B in
Dwg. MA-010-3B mm
0.028
0.70
3
3
1.00
0.039
2.40
0.094
1
2
1
2
0.95
0.037
Dwg. MA-011-3 mm
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.
www.allegromicro.com
9
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR ‘UA’
Dimensions in Millimeters
Dimensions in Inches
(controlling dimensions)
(for reference only)
4.17
4.04
0.164
0.159
1.57
1.47
0.062
0.058
45°
45°
0.122
0.117
3.10
2.97
45°
45°
0.031
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
0.0189
0.0142
0.48
0.36
SEE NOTE
SEE NOTE
0.050
BSC
1.27
BSC
Dwg. MH-014E in
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.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
10
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
Surface-Mount Lead Form (order A32xxEUA-TL)
Dimensions in Millimeters
Dimensions in Inches
(controlling dimensions)
(for reference only)
2.41
0.095
0.13
0.005
0.051
0.002
MAX
MAX
0°–8°
0°–8°
0.10
0.004
0.020
MIN
FLAT
0.51
MIN
FLAT
MAX
MAX
Dwg. MH-015 in
Dwg. MH-015 mm
Radial Lead Form (order A32xxEUA-LC)
1
2
3
0.108"
(2.74 mm)
0.620"
0.500"
(15.7 mm
12.7 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)
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.
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 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 responsi-
bility for its use; nor for any infringements of patents or other rights of
third parties that may result from its use.
www.allegromicro.com
11
3209 AND 3210
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCHES
HALL-EFFECT SENSORS
Partial Part Avail. Oper.
Characteristics at T = +25°C
A
Number
Temp.
B
max
B
min
B
typ
Features
Notes
OP
RP
hys
HALL-EFFECT UNIPOLAR & OMNIPOLAR SWITCHES in order of B
and B
hys
OP
3240
3209
3210
3361
3362
3161
3141
3235
E/L
E
+50
60
+5.0
5.0
10
7.7
7.7
5.0*
5.0*
20
chopper stabilized
400 µW, chopper stabilized
25 µW, chopper stabilized
2-wire, chopper stabilized, inverted output
2-wire, chopper stabilized
2-wire
1
E
60
5.0
E
+125
+125
+160
+160
+175
-25
+200
+230
+340
+350
+400
+440
+450
+40
+40
+30
+10
+25
-175
+50
+75
+165
+50
+140
+180
+125
E
E
E/L
S
55
15*
15*
55
output 1
output 2
300 mA power driver output
2
2
1
5140
3142
3143
3144
3122
3123
3121
E
E/L
E/L
E/L
E/L
E/L
E/L
55
55
55
105
105
105
†
HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of B
and B
hys
OP
3260
3280
3134
3133
3281
3132
3187
3177
3625
3626
3195
3197
3175
3188
3283
3189
3275
3185
E/L
E/L
E/L
K/L/S
E/L
K/L/S
E/L
S
+30
+40
-30
-40
20
45
bipolar switch, chopper stabilized
chopper stabilized
bipolar switch
+50
-50
27
+75
-75
52
100
52
bipolar switch
+90
-90
chopper stabilized
bipolar switch
+95
-95
+150
+150
+150
+150
+160
+160
+170
+180
+180
+230
+250
+270
-150
-150
-150
-150
-160
-160
-170
-180
-180
-230
-250
-270
100*
200
200
200
220
230
200
200*
300
100*
100*
340*
S
900 mA power driver output
400 mA power driver output
active pulldown
1, 3
1, 3
1
S
E/L
L
1
S
E/L
E/L
E/L
S
chopper stabilized
3
E/L
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. 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.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
12
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