A1382LLHLT-T Allegro Microsystems Inc, A1382LLHLT-T Datasheet - Page 9

• Manufacturer Part Number: A1382LLHLT-T
• Description: IC SENSOR HALL EFFECT SOT23-W
• Manufacturer: Allegro Microsystems Inc
• Series: A138xr
• Type: Linear - Programmabler

Specifications of A1382LLHLT-T

• Sensing Range: 4mV/G ~ 6.25mV/G
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 8mA
• Current - Output (max): 10mA
• Output Type: Analog, Ratiometric
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-23W
• Peak Reflow Compatible (260 C): Yes
• Accuracy %: 1.5%
• Supply Voltage: 5V
• Output Current: 2mA
• Termination Type: SMD
• Bandwidth: 17kHz
• Supply Voltage Max: 5.5V
• Sensitivity: 4 To 6.25 MV/G
• No. Of Pins: 3
• Hall Effect Type: Linear
• Supply Voltage Min: 4.5V
• Operating Temperature Max: 150°C
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Leaded Process Compatible: Yes
• Operating Temperature Min: -40°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 620-1197-2

A1381, A1382,
A1383, and A1384
For purposes of specification, the sensitivity drift due to package
hysteresis, ∆Sens
where Sens
= 25°C, and Sens
after temperature cycling T
back to up 25°C.
Linearity Sensitivity Error
provide a linear output in response to a ramping applied magnetic
field. Consider two magnetic fields, B1 and B2. Ideally, the sen-
sitivity of a device is the same for both fields, for a given supply
voltage and temperature. Linearity error is present when there is a
difference between the sensitivities measured at B1 and B2.
Linearity Error is calculated separately for the positive
(Lin
Linearity error (%) is measured and defined as:
where:
and B
with respect to the quiescent voltage output such that
|B
Symmetry Sensitivity Error
A138x device is constant for any two applied magnetic fields of
equal magnitude and opposite polarities.
POS2
ERRPOS
POSx
| > |B
∆Sens
and B
Lin
) and negative (Lin
Lin
(25°C)1
POS1
Lin
PKG
ERRNEG
ERRPOS
Sens
ERR
| and |B
NEGx
PKG
(25°C)2
is the programmed value of sensitivity at T
=
Bx
=
, is defined as:
Sens
=
are positive and negative magnetic fields,
=
=
max( |Lin
NEG2
|V
is the value of sensitivity at T
⎛
⎜ ⎜
⎝
⎛
⎜ ⎜
⎝
1–
1–
(25°C)2
OUT(Bx)
A
The 138x family is designed to
Sens
Sens
Sens
Sens
| > |B
up to 150°C, down to –40°C, and
Sens
The magnetic sensitivity of an
ERRNEG
ERRPOS
– Sens
BPOS2
BPOS1
BNEG2
BNEG1
B
–
NEG1
(25°C)1
x
Programmable Linear Hall Effect Sensor ICs with Analog Output
V
OUT(Q)
) applied magnetic fields.
⎞
⎟ ⎟
⎠
⎞
⎟ ⎟
⎠
|. Then:
(25°C)1
| , |Lin
×
×
Available in a Miniature Thin Profile Surface Mount Package
100%
100%
|
×
ERRNEG
,
100%
,
,
A
| )
,
= 25°C,
.
(10)
(11)
A
(8)
(9)
Symmetry error, Sym
where Sens
are positive and negative magnetic fields such that |B
Ratiometry Error
This means that the quiescent voltage output, V
sensitivity, Sens, and clamp voltage, V
are proportional to the supply voltage, V
the supply voltage increases or decreases by a certain percent-
age, each characteristic also increases or decreases by the same
percentage. Error is the difference between the measured change
in the supply voltage relative to 5 V, and the measured change in
each characteristic.
The ratiometric error in quiescent voltage output, Rat
(%), for a given supply voltage, V
The ratiometric error in magnetic sensitivity, Rat
a given supply voltage, V
The ratiometric error in the clamp voltages, Rat
given supply voltage, V
where V
Rat
ERRVOUT(Q)
Rat
CLP
Rat
ERRCLP
Bx
ERRSens
is either V
Sym
is as defined in equation 10, and B
=
ERR
The A138x devices feature ratiometric output.
⎛
⎜ ⎜
⎝
=
1–
=
⎛
⎜ ⎜
⎝
1–
⎛
⎜ ⎜
⎝
=
ERR
1–
CLP(HIGH)
V
⎛
⎜ ⎜
⎝
CC
V
1–
OUT(Q)(VCC)
Sens
CLP(VCC)
CC
(%), is measured and defined as:
, is defined as:
Sens
Sens
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
, is defined as:
V
(VCC)
V
CC
BNEG
V
CC
BPOS
or V
CC
/ 5 V
CC
/ V
/ 5 V
/ Sens
/ 5 V
/ V
CLP(LOW)
, is defined as:
CLP(5V)
⎞
⎟ ⎟
⎠
×
CLP(HIGH)
OUT(Q)(5V)
100%
CC
(5V)
. In other words, when
⎞
⎟ ⎟
⎠
⎞
⎟ ⎟
⎠
.
×
×
100%
OUT(Q)
ERRCLP
,
100%
and V
POS
ERRSens
⎞
⎟ ⎟
⎠
×
POS
100%
and B
ERRVOUT(Q)
, magnetic
CLP(LOW)
| = |B
(%), for a
.
.
(%), for
NEG
.
NEG
(12)
(13)
(14)
(15)
,
|.
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