A1391 ALLEGRO [Allegro MicroSystems], A1391 Datasheet - Page 9

• Manufacturer Part Number: A1391
• Description: Micro Power 3 V Linear Hall Effect Sensors withTri-State Output and User-Selectable Sleep Mode
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A1391, A1392,
A1393, and A1395
Ratiometric. The A139x devices feature ratiometric output.
The quiescent voltage output and sensitivity are proportional to
the ratiometric supply reference voltage.
The percent ratiometric change in the quiescent voltage output is
defined as:
and the percent ratiometric change in sensitivity is defined as:
ΔV
ΔSens
OUTQ(ΔV)
(ΔV)
=
=
ΔSens
ΔV
OUTQ(V
(V
V
REF
REF
V
)
REF
÷
REF
÷ 3 V
ΔSens
)
÷
÷ 3 V
ΔV
(3V)
OUTQ(3V)
Micro Power 3 V Linear Hall Effect Sensors with
× 100%
Tri-State Output and User Selectable Sleep Mode
× 100 %
Characteristics Definitions
(1)
(2)
Linearity and Symmetry. The on-chip output stage is
designed to provide a linear output with maximum supply voltage
of V
not damage these devices, it will force the output into a non-lin-
ear region. Linearity in percent is measured and defined as
and output symmetry as
CCN
Lin+
Lin–
Sym
. Although application of very high magnetic fields will
=
=
=
2(V
2(V
V
V
V
V
OUT(+B)
OUT(+B / 2)
OUT(–B)
OUT(–B / 2)
OUT(+B)
OUTQ
– V
–
–
–
V
OUT(–B)
– V
– V
V
OUTQ
V
OUTQ
OUTQ
OUTQ
OUTQ
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
)
)
× 100 %
× 100 %
× 100 %
(3)
(4)
(5)
9