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Электронный компонент: A1302KLHLT-T

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A1301 and A1302
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
AB SO LUTE MAX I MUM RAT INGS
Supply Voltage, V
CC
............................................8 V
Output Voltage, V
OUT
.......................................... 8 V
Reverse-Supply Voltage, V
RCC
.......................0.1 V
Reverse-Output Voltage, V
ROUT
.....................0.1 V
Output Sink Current, I
OUT
............................. 10 mA
Operating Temperature
Ambient,
T
A
, Range E.................. 40C to 85C
Ambient,
T
A
, Range K ............... 40C to 125C
Maximum
Junction,
T
J(max)
........................165C
Storage Temperature, T
S
.................. 65C to 170C
Low-noise output
Fast power-on time
Ratiometric rail-to-rail output
4.5 to 6.0 V operation
Solid-state reliability
Factory-programmed at end-of-line for optimum performance
Robust ESD performance
The A1301 and A1302 are continuous-time, ratiometric, linear Hall-effect sensors.
They are optimized to accurately provide a voltage output that is proportional to
an applied magnetic field. These devices have a quiescent output voltage that is
50% of the supply voltage. Two output sensitivity options are provided: 2.5 mV/G
typical for the A1301, and 1.3 mV/G typical for the A1302.
The Hall-effect integrated circuit included in each device includes a Hall sensing
element, a linear amplifier, and a CMOS Class A output structure. Integrating the
Hall sensing element and the amplifier on a single chip minimizes many of the
problems normally associated with low voltage level analog signals.
High precision in output levels is obtained by internal gain and offset trim adjust-
ments made at end-of-line during the manufacturing process.
These features make the A1301 and A1302 ideal for use in position sensing
systems, for both linear target motion and rotational target motion. They are well-
suited for industrial applications over extended temperature ranges, from 40C to
125C.
Two device package types are available: LH, a 3-pin SOT23W type for surface
mount, and UA, a 3-pin ultramini SIP for through-hole mount. Each package is
available in a lead (Pb) free version (suffix, T) with 100% matte tin plated lead-
frame.
Continuous-Time Ratiometric Linear Hall Effect Sensors
Features and Benefits
Package UA, 3-pin SIP
1
2
3
1. VCC
2. GND
3. VOUT
Package LH, 3-pin Surface Mount
1
2
3
1. VCC
2. VOUT
3. GND
2
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Continuous-Time Ratiometric Linear Hall Effect Sensors
A1301 and A1302
Functional Block Diagram
Amp
GND
VOUT
VCC
Out
Offset
Trim
Control
Gain
V+
Voltage
Regulator
Filte
r
CBYPASS
Terminal List
Symbol
Description
Number
Package LH Package UA
VCC
Connects power supply to chip
1
1
VOUT
Output from circuit
2
3
GND
Ground
3
2
Part Number
Pb-free
Packing*
Package
Ambient, T
A
Sensitivity (Typical)
A1301ELHLT
7-in. tape and reel, 3000 pieces/reel
Surface Mount
40C to 85C
2.5 mV/G
A1301ELHLT-T
Yes
A1301EUA
Bulk, 500 pieces/bag
SIP
A1301EUA-T
Yes
A1301KLHLT
7-in. tape and reel, 3000 pieces/reel
Surface Mount
40C to 125C
A1301KLHLT-T
Yes
A1301KUA
Bulk, 500 pieces/bag
SIP
A1301KUA-T
Yes
A1302ELHLT
7-in. tape and reel, 3000 pieces/reel
Surface Mount
40C to 85C
1.3 mV/G
A1302ELHLT-T
Yes
A1302EUA
Bulk, 500 pieces/bag
SIP
A1302EUA-T
Yes
A1302KLHLT
7-in. tape and reel, 3000 pieces/reel
Surface Mount
40C to 125C
A1302KLHLT-T
Yes
A1302KUA
Bulk, 500 pieces/bag
SIP
A1302KUA-T
Yes
Product Selection Guide
*Contact Allegro for additional packing options.
3
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Continuous-Time Ratiometric Linear Hall Effect Sensors
A1301 and A1302
DEVICE CHARACTERISTICS
over operating temperature range, T
A
, and V
CC
= 5 V, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Electrical Characteristics
Supply Voltage
V
CC
Running, T
J
< 165C
4.5
6
V
Supply Current
I
CC
Output open
11
mA
Output Voltage
V
OUT(High)
I
SOURCE
= 1 mA, Sens = nominal
4.65
4.7
V
V
OUT(Low)
I
SINK
= 1 mA, Sens = nominal
0.2
0.25
V
Output Bandwidth
BW
20
kHz
Power-On Time
t
PO
V
CC(min)
to 0.95 V
OUT;
B = 1400 G;
Slew rate = 4.5 V/s to 4.5 V/100 ns
3
5
s
Output Resistance
R
OUT
I
SINK
1 mA, I
SOURCE
1 mA
2
5
Wide Band Output Noise, rms
V
OUTN
External output low pass filter 10 kHz;
Sens = nominal
150
V
Ratiometry
Quiescent Output Voltage Error
with respect to V
CC
1
V
OUTQ(V)
T
A
= 25C
3.0
%
Magnetic Sensitivity Error with
respect to V
CC
2
Sens
(V)
T
A
= 25C
3.0
%
Output
Linearity
Lin
T
A
= 25C
2.5
%
Symmetry
Sym
T
A
= 25C
3.0
%
Magnetic Characteristics
Quiescent Output Voltage
V
OUTQ
B = 0 G; T
A
= 25C
2.4
2.5
2.6
V
Quiescent Output Voltage over
Operating Temperature Range
V
OUTQ(
T
A
)
B = 0 G
2.2
2.8
V
Magnetic Sensitivity
Sens
A1301; T
A
= 25C
2.0
2.5
3.0
mV/G
A1302; T
A
= 25C
1.0
1.3
1.6
mV/G
Magnetic Sensitivity over
Operating Temperature Range
Sens
(
T
A
)
A1301
1.8
3.2
mV/G
A1302
0.85
1.75
mV/G
1
Refer to equation (4) in Ratiometric section on page 4.
2
Refer to equation (5) in Ratiometric section on page 4.
4
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Continuous-Time Ratiometric Linear Hall Effect Sensors
A1301 and A1302
Characteristic Definitions
Quiescent Output Voltage. In the quiescent state (no sig-
nificant magnetic field: B = 0), the output, V
OUTQ
, equals one
half of the supply voltage, V
CC
, throughout the entire operating
ranges of V
CC
and ambient temperature, T
A
. Due to internal
component tolerances and thermal considerations, however,
there is a tolerance on the quiescent output voltage, V
OUTQ
,
which is a function of both V
CC
and T
A
. For purposes of speci-
fication, the quiescent output voltage as a function of tempera-
ture, V
OUTQ(T
A
)
, is defined as:
where Sens is in mV/G, and the result is the device equivalent
accuracy, in gauss (G), applicable over the entire operating tem-
perature range.
Sensitivity. The presence of a south-polarity (+B) magnetic
field, perpendicular to the branded face of the device package,
increases the output voltage, V
OUT
, in proportion to the magnetic
field applied, from V
OUTQ
toward the V
CC
rail. Conversely, the
application of a north polarity (B) magnetic field, in the same
orientation, proportionally decreases the output voltage from its
quiescent value. This proportionality is specified as the magnetic
sensitivity of the device and is defined as:
The stability of the device magnetic sensitivity as a function of
ambient temperature, Sens
(T
A
)
(%) is defined as:
Ratiometric. The A1301 and A1302 feature a ratiometric
output. This means that the quiescent voltage output, V
OUTQ
,
and the magnetic sensitivity, Sens, are proportional to the supply
voltage, V
CC
.
The ratiometric change (%) in the quiescent voltage output is
defined as:
and the ratiometric change (%) in sensitivity is defined as:
Linearity and Symmetry. The on-chip output stage is
designed to provide linear output at a supply voltage of 5 V.
Although the application of very high magnetic fields does not
damage these devices, it does force their output into a nonlinear
region. Linearity in percent is measured and defined as:
and output symmetry as:
V
OUTQ(
)
Sens
(25C)
V
OUTQ(
)
V
OUTQ(25C)
=
(1)
2B
V
OUT(B)
V
OUT(+B)
Sens
=
Sens
(
)
Sens
(
)
Sens
(25C)
Sens
(25C)
=
100%
(2)
(3)
V
CC
5 V
V
OUTQ(V
CC
)
V
OUTQ(5V)
V
OUTQ(V)
=
100%
(4)
V
CC
5 V
=
100%
Sens
(V)
Sens
(V
CC
)
Sens
(5V)
(5)
=
100%
Lin+
2 (V
OUT(+B)
V
VOUTQ
)
V
OUT(+B)
V
OUTQ
(6)
=
100%
Lin
2(V
OUT(B)
V
OUTQ
)
V
OUT(B)
V
OUTQ
(7)
=
100%
Sym
V
OUT(+B)
V
OUTQ
V
OUT(B)
V
OUTQ
(8)
5
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Continuous-Time Ratiometric Linear Hall Effect Sensors
A1301 and A1302
Typical Characteristics
(30 pieces, 3 fabrication lots)
Continued on the next page...
2.35
2.40
2.45
2.50
2.55
2.60
2.65
50 25
0
25
50
75 100 125 150
1.24
1.26
1.28
1.30
1.32
1.34
1.36
1.38
1.40
-50
-25
0
25
50
75
100 125 150
2.40
2.45
2.50
2.55
2.60
50 25
0
25
50
75
100
125
150
2.40
2.45
2.50
2.55
2.60
50
25
0
25
50
75
100
125
150
4.5
5.0
5.5
6.0
4.5
5.0
5.5
6.0
LH Package
UA Package
LH Package
UA Package
1301 Device Sensitivity vs. Ambient Temperature
1302 Device Sensitivity vs. Temperature
Temperature (C)
Temperature (C)
1301 Device V
OUTQ
vs. Ambient Temperature
1302 Device V
OUTQ
vs. Ambient Temperature
1301 Device Sensitivity vs. Supply Voltage
1302 Device Sensitivity vs. Supply Voltage
Supply Voltage (V)
Supply Voltage (V)
Temperature (C)
Temperature (C)
S
e
ns
it
iv
it
y
(
m
V
/G
)
S
e
ns
it
iv
it
y
(
m
V
/G
)
Output
Voltage
(V)
Output
Voltage
(V)
S
e
ns
it
iv
it
y
(
m
V
/G
)
S
e
ns
it
iv
it
y
(
m
V
/G
)
1.5
2.0
2.5
3.0
3.5
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7