Hall-Effect Switch. A1266 Datasheet

A1266 Switch. Datasheet pdf. Equivalent

Part A1266
Description Micropower Ultrasensitive 3D Hall-Effect Switch
Feature A1266 Micropower Ultrasensitive 3D Hall-Effect Switch FEATURES AND BENEFITS • True 3D sensing • O.
Manufacture Allegro
Datasheet
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A1266 Micropower Ultrasensitive 3D Hall-Effect Switch FEATU A1266 Datasheet
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A1266
A1266
Micropower Ultrasensitive 3D Hall-Effect Switch
FEATURES AND BENEFITS
• True 3D sensing
• Omnipolar operation with either north or south pole
• 2.5 to 5.5 V operation
• Low supply current
• High sensitivity, BOP typically 25 G
• Chopper-stabilized offset cancellation
□Superior temperature stability
□Extremely low switchpoint drift
□Insensitive to physical stress
• Solid-state reliability
• Choice of output format
□Separate X, Y, and Z outputs
Combined (X+Y+Z) output
• Tiny SOT-23 packages
PACKAGES:
5-Pin SOT23-W
3-Pin SOT23-W
DESCRIPTION
The A1266 integrated circuit is an ultrasensitive Hall-effect
switch with 3D omnipolar magnetic actuation. The single
silicon chip includes: three Hall plates, multiplexer, small-
signal amplifier, chopper stabilization, Schmitt trigger, and
NMOS output transistors. The device outputs turn on when a
magnetic field of sufficient strength is applied to the sensor
in any orientation. Removal of the magnetic field will turn
the output off.
Two versions of the A1266 offer a choice of output format:
separate X, Y, and Z outputs, or a combined X+Y+Z output.
The low operating supply voltage, 2.5 to 5.5 V, and unique
clocking algorithm assist in reducing the average power
consumption, making it ideal for battery operation (e.g., the
power consumption is less than 25 μW with a 3.3 V supply).
The small geometries of the BiCMOS process allow for
ultrasmall packages suitable for even space-constrained
applications. In this case, a modified SOT23-W surface-mount
package is available in a 3-pin (combined output) or a 5-pin
(separate outputs) configuration, magnetically optimized for
use in a variety of orientations. The packages are lead (Pb) free
and RoHS-compliant, with 100% matte-tin leadframe plating.
Not to scale
VDD
X Hall
Y Hall
Z Hall
Hall
Amp.
To All Subcircuits
Low-Pass
Filter
Sample, Hold &
Averaging
Note for Pin Designations: Triple-Output (Single Output) Options
Functional Block Diagram
A1266-DS, Rev. 5
MCO-0000135
Output
Logic
OUTX (OUT)
OUTY (n/a)
OUTZ (n/a)
GND
January 23, 2019



A1266
A1266
Micropower Ultrasensitive 3D Hall-Effect Switch
SPECIFICATIONS
SELECTION GUIDE
Part Number
A1266ELHLT-T
A1266ELHLX-T
A1266ELHLT-SO3-T
A1266ELHLX-SO3-T
A1266ELHLT-SO-T*
A1266ELHLX-SO-T*
Packing
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
7-in. reel, 3000 pieces/reel
13-in. reel, 10000 pieces/reel
Package
5-pin SOT23-W
5-pin SOT23-W
3-pin SOT23-W
3-pin SOT23-W
5-pin SOT23-W
5-pin SOT23-W
RoHS
COMPLIANT
Description
3 Outputs of X, Y, and Z
3 Outputs of X, Y, and Z
Single Output of OR (X, Y, and Z)
Single Output of OR (X, Y, and Z)
Single Output of OR (X, Y, and Z)
Single Output of OR (X, Y, and Z)
* These parts are in production but have been determined to be NOT FOR NEW DESIGN.This classification indicates that sale of this device is currently
restricted to existing customer applications. Samples are no longer available.
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Forward Supply Voltage
Reverse Supply Voltage
Magnetic Flux Density
VDD
VRDD
B
Output Off Voltage
Reverse Output Voltage
Continuous Output Current
Reverse Output Current
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
VOUT
VROUT
IOUT
IROUT
TA
TJ(MAX)
Tstg
Range E
Notes
Rating
5.5
–0.3
Unlimited
5.5
–0.3
3
–3
–40 to 85
165
–65 to 170
Unit
V
V
G
V
V
mA
mA
°C
°C
°C
Allegro MicroSystems, LLC
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
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