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Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
4
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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
 < 165癈
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 = ?400 G;
Slew rate = 4.5 V/約 to 4.5 V/100 ns
    3    5    約
Output Resistance
R
OUT
I
SINK
 d 1 mA, I
SOURCE
e 1 mA
    2    5    ?/DIV>
Wide Band Output Noise, rms
V
OUTN
External output low pass filter d 10 kHz;
Sens = nominal
    150        糣
Ratiometry
Quiescent Output Voltage Error
with respect to V
CC
1
擵
OUTQ(V)
T
A
 = 25癈
        ?.0   %
Magnetic Sensitivity Error with
respect to V
CC
2
擲ens
(V)
T
A
 = 25癈
        ?.0   %
Output
Linearity
Lin    T
A
 = 25癈
        ?.5   %
Symmetry
Sym   T
A
 = 25癈
        ?.0   %
Magnetic Characteristics
Quiescent Output Voltage
V
OUTQ
B = 0 G; T
A
 = 25癈
2.4   2.5   2.6    V
Quiescent Output Voltage over
Operating Temperature Range
V
OUTQ(DT
A
)
B = 0 G
2.2        2.8    V
Magnetic Sensitivity
Sens
A1301; T
A
 = 25癈
2.0   2.5   3.0   mV/G
A1302; T
A
 = 25癈
1.0   1.3   1.6   mV/G
Magnetic Sensitivity over
Operating Temperature Range
Sens
(DT
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.
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