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A1381 Datasheet(PDF) 1 Page - Allegro MicroSystems

No. de Pieza. A1381
Descripción  Programmable Linear Hall Effect Sensors with Analog Output Available in a Miniature Thin Profile Surface Mount Package
Descarga  18 Pages
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Fabricante  ALLEGRO [Allegro MicroSystems]
Página de inicio  http://www.allegromicro.com
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A1381 Datasheet(HTML) 1 Page - Allegro MicroSystems

 
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A1381-DS, Rev. 9
Features and Benefits
▪ Customer programmable offset, sensitivity, sensitivity
temperature coefficient, and polarity
▪ Programmability at end-of-line
▪ Ratiometric sensitivity, quiescent voltage output, and
clamps for interfacing with application DAC
▪ Temperature-stable quiescent voltage output
and sensitivity
▪ Precise recoverability after temperature cycling
▪ Output voltage clamps provide short circuit
diagnostic capabilities
▪ Wide ambient temperature range: –40°C to 150°C
▪ Immune to mechanical stress
▪ Miniature package options
Functional Block Diagram
Not to scale
A1381, A1382, A1383, and A1384
Continued on the next page…
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Programmable Linear Hall Effect Sensor ICs with Analog Output
Available in a Miniature Thin Profile Surface Mount Package
Amp
To all subcircuits
Out
VCC
V+
VOUT
(Programming)
GND
Gain
Gain Temperature
Coefficient
Offset
Trim Control
Hall Drive Circuit
CBYPASS
Description
New applications for linear output Hall effect sensing, such
as displacement, angular position, and current measurement,
require high accuracy in conjunction with small package size.
TheAllegro®A138x family of programmable linear Hall effect
sensor ICs was designed specifically to achieve both goals.
These temperature-stable devices are available in a miniature
surface mount package (SOT23-W) and an ultramini through-
hole single-in-line package. The accuracy of these devices is
enhanced via programmability on the output pin for end-of-line
optimization without the added complexity and cost of a fully
programmable device.
These ratiometric Hall effect devices provide a voltage output
that is proportional to the applied magnetic field. Both the
quiescent voltage output and magnetic sensitivity are user-
adjustable. The quiescent voltage output can be set around
50% of the supply voltage, and the sensitivity adjusted between
2 mV/G and 9 mV/G over the device family. Programming
selections also exist for output polarity and temperature
compensation. The features of this linear family make it ideal
for high accuracy requirements of automotive and industrial
applications, and performance is guaranteed over an extended
temperature range, –40°C to 150°C.


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