A1321, A1322,
and
A1323
Ratiometric Linear Hall Effect Sensor
for High-Temperature Operation
MAGNETIC CHARACTERISTICS
1,2
over operating temperature range, T
A
; V
CC
= 5 V, I
out
= –1 mA; unless otherwise noted
Max
Units
4
Characteristics
Symbol
Test Condition
Min
Typ
3
A1321; T
A
= 25ºC
4.750
5.000
5.250
mV/G
Sensitivity
5
Sens
2.969
3.125
3.281
mV/G
A1322; T
A
= 25ºC
2.375
2.500
2.625
mV/G
A1323; T
A
= 25ºC
Delta V
out(q)
as a func-
V
out(q)(ΔT)
Defined in terms of magnetic
fl
ux density, B
–
–
±10
G
tion of temperature
V
out(q)(ΔV)
–
–
±1.5
%
Ratiometry, V
out(q)
Ratiometry, Sens
ΔSens
(ΔV)
–
–
±1.5
%
Positive Linearity
Lin+
–
–
±1.5
%
Negative Linearity
Lin–
–
–
±1.5
%
Symmetry
Sym
–
–
±1.5
%
UA Package
Delta Sens at T
A
= max
5
ΔSens
(TAmax)
From hot to room temperature
–2.5
–
7.5
%
Delta Sens at T
A
= min
5
ΔSens
(TAmin)
From cold to room temperature
–6
–
4
%
Sensitivity Drift
6
Sens
Drift
T
A
= 25°C; after temperature cycling and over time
–
1
2
%
LH Package
Delta Sens at T
A
= max
5
ΔSens
(TAmax)
From hot to room temperature
–5
–
5
%
Delta Sens at T
A
= min
5
ΔSens
(TAmin)
From cold to room temperature
–3.5
–
8.5
%
6
Sensitivity Drift
Sens
Drift
T
A
= 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 T = 25°C, except for
ΔSens,
and at
x.x
Sens. Typical data are for initial design estimations only, and assume optimum
A
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.
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
4
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
