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A1321 Datasheet(PDF) 4 Page - Allegro MicroSystems

Part No. A1321
Description  Ratiometric Linear Hall Effect Sensor for High-Temperature Operation
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A1321 Datasheet(HTML) 4 Page - Allegro MicroSystems

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A1321-DS Rev. 3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Ratiometric Linear Hall Effect Sensor for High-Temperature Operation
A1321/A1322/A1323
MAGNETIC CHARACTERISTICS1,2 over operating temperature range, TA; VCC = 5 V, Iout = –1 mA; unless otherwise noted
Characteristics
Symbol
Test Condition
Min
Typ3
Max
Units4
Sensitivity5
Sens
A1321; TA = 25ºC
4.750
5.000
5.250
mV/G
A1322; TA = 25ºC
2.969
3.125
3.281
mV/G
A1323; TA = 25ºC
2.375
2.500
2.625
mV/G
Delta Vout(q) as a func-
tion of temperature
Vout(q)(∆T)
Defined in terms of magnetic flux density, B
±10
G
Ratiometry, Vout(q)
Vout(q)(∆V)
±1.5
%
Ratiometry, Sens
∆Sens(∆V)
±1.5
%
Positive Linearity
Lin+
±1.5
%
Negative Linearity
Lin–
±1.5
%
Symmetry
Sym
±1.5
%
UA Package
Delta Sens at TA = max5 ∆Sens(TAmax) From hot to room temperature
–2.5
7.5
%
Delta Sens at TA = min5 ∆Sens(TAmin) From cold to room temperature
–6
4
%
Sensitivity Drift6
SensDrift
TA = 25°C; after temperature cycling and over time
1
2
%
LH Package
Delta Sens at TA = max5 ∆Sens(TAmax) From hot to room temperature
–5
5
%
Delta Sens at TA = min5 ∆Sens(TAmin) From cold to room temperature
–3.5
8.5
%
Sensitivity Drift6
SensDrift
TA = 25°C; after temperature cycling and over time
0.328
2
%
1 Additional information on chracteristics is provided in the section Characteristics Definitions, on the next page.
2 Negative current is defined as conventional current coming out of (sourced from) the specified device terminal.
3 Typical data is at TA = 25°C, except for ∆Sens, and at x.x Sens. Typical data are for initial design estimations only, and assume optimum
manufacturing and application conditions. Performance may vary for individual units, within the specified maximum and minimum limits.
In addition, the typical values vary with gain.
4 10 G = 1 millitesla.
5 After 150ºC pre-bake and factory programming.
6 Sensitivity drift is the amount of recovery with time.


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