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Details, datasheet, quote on part number:3209
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Datasheet text preview:
3209 AND 3210
Package Suffix `LH' Pinning (SOT23W)
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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 µW, the A3210Ex to 25 µW! 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 -40°C to +85°C. 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
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
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 Operating Temperature Range, TA ....... -40°C to +85°C Storage Temperature Range, TS ...... -65°C to +170°C
Caution: These CMOS devices have input static protection (Class 3) but are still susceptible to damage if exposed to extremely high static electrical charges.
32 -- eA Us
03 . 20 ign Y 1, s U t. 3 de B c ew E il O r n IM unt A fo -T ed EU T t 12 S ep 2 A cc A3 L a or rs LH de 12E r O
2
GROUND
Dwg. PH-016-1
OUTPUT
SUPPLY
FEATURES
s s s s
s s s s
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
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
800
ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS
Package Suffix `UA' Pinning (ultra-mini SIP)
Suffix "UA" RJA = 165°C/W 600
500 Suffix "LH" RJA = 228°C/W 400
V
DD
1
300
X
2
700
3
200
GROUND
100
0 20 40 60 100 80 120 AMBIENT TEMPERATURE in °C 140 160 180
Dwg. PH-016
Dwg. GH-046-3B
Pinning is shown viewed from branded side.
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115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2000, 2002 Allegro MicroSystems, Inc.
OUTPUT
SUPPLY
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 Supply Voltage Range Output Leakage Current Output On Voltage Awake Time Period Symbol VD D IO F F VOUT ta w a k e t period A3209Ex A3210Ex Duty Cycle d.c. A3209Ex A3210Ex Chopping Frequency Supply Current (2.5 VDD 3.5 V) fC ID D ( E N ) ID D ( D I S ) I DD(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 = +25°C and VDD = 2.75 V and is for design information only. Test Conditions O p e r a t i n g 1) 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 µA mV µs µs ms % % kHz mA µA µA µA µA µA
MAGNETIC CHARACTERISTICS with CBYPASS = 0.1 µF, over operating voltage and temperature range (unless otherwise specified).
Limits Characteristic Operate Points Symbol B OPS BOPN Release Points B RPS BRPN Hysteresis B hys 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 = +25°C and VDD = 2.75 V and is for design information only.
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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 µA
VDD = 3.5 V
AVERAGE SUPPLY CURRENT IN µ 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
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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 = 25°C
-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 µA
180
AVERAGE SUPPLY CURRENT IN µA
200
14
12
160
10
140
TA = 25°C
8.0
TA = 25°C
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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