a3210ex Allegro MicroSystems, Inc., a3210ex Datasheet

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a3210ex

Manufacturer Part Number
a3210ex
Description
Micropower, Ultra-sensitive Hall-effect Switches
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
Pinning is shown viewed from branded side.
Supply Voltage, V
Magnetic Flux Density, B .......... Unlimited
Output Off Voltage, V
Output Current, I
Junction Temperature, T
Operating Temperature Range,
Storage Temperature Range,
Caution: These CMOS devices have input
static protection (Class 3) but are still
susceptible to damage if exposed to
extremely high static electrical charges.
ABSOLUTE MAXIMUM RATINGS
Package Suffix ‘LH’ Pinning
T
T
A
S
.............................. -65
............................... -40
V
DD
1
at T
(SOT23W)
OUT
A
DD
3
= +25
............................. 5 V
.......................... 1 mA
OUT
Dwg. PH-016-1
J
............... +170
..................... 5 V
°
C
°
2
C to +170
°
C to +85
°
°
°
C
C
C
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.
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.
offset cancellation), which reduces the residual offset voltage normally caused
by device overmolding, temperature dependencies, and thermal stress.
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.
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.
FEATURES
■ Micropower Operation
■ Operate With North or South Pole
■ 2.5 V to 3.5 V Battery Operation
■ Chopper Stabilized
■ 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 .
MICROPOWER, ULTRA-SENSITIVE
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
3209
3210
The A3209Ex and A3210Ex integrated circuits are ultra-sensitive, pole
Unlike other Hall-effect switches, either a north or south pole of sufficient
Improved stability is made possible through chopper stabilization (dynamic
These devices include on a single silicon chip a Hall-voltage generator,
The A3209Ex and A3210Ex are rated for operation over a temperature
HALL-EFFECT SWITCHES
AND

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a3210ex Summary of contents

Page 1

... A3209Ex to 400 µW, the A3210Ex to 25 µW! Except for operating duty cycle and average operating current, the A3209Ex and A3210Ex are identical ...

Page 2

AND MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES SUPPLY SWITCH X 800 700 Suffix "UA" 165 C/W JA 600 500 Suffix "LH" 228 C/W JA 400 300 200 100 100 AMBIENT TEMPERATURE ...

Page 3

AND MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES 3210 ...

Page 4

AND MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES OPS B 20 RPS 0 -20 B RPN B OPN -40 -60 -50 - AMBIENT TEMPERATURE IN C 220 200 V DD 180 ...

Page 5

B OPS B RPS 20 0 -20 B RPN B OPN -40 -60 2.4 2.6 2.8 3.0 SUPPLY VOLTAGE IN VOLTS 220 200 180 160 140 120 2.4 2.6 2.8 3.0 SUPPLY VOLTAGE IN VOLTS ...

Page 6

... Low Average Power. Internal timing circuitry activates the device 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 sampling and data latching on the falling edge of the timing pulse. The output during the " ...

Page 7

OUTPUT OFF 5 V MAX B OPN B RPN 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 ...

Page 8

AND MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES 0.122 0.114 0.020 0.012 0.083 3 0.118 0.073 0.106 1 2 GAUGE PLANE SEATING PLANE 0.022 REF 0.037 BSC 0.0079 0.006 0.0050 0.045 0.000 0.032 0.028 3 0.039 1 2 0.037 Dwg. MA-011-3 ...

Page 9

MAX 0.640 0.600 0.0189 SEE NOTE 0.0142 0.050 BSC HALL-EFFECT SWITCHES 45 3.10 2.97 45 0.0173 16.26 15.24 0.0138 SEE NOTE Dwg. MH-014E in 0.620" 0.500" (15.7 mm ...

Page 10

AND MICROPOWER, ULTRA-SENSITIVE HALL-EFFECT SWITCHES ...

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