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High Precision, Output Pin Programmable
Linear Hall Effect Sensor ICs
A1373 and
A1374
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Characteristic
Symbol
Test Conditions
Min.    Typ.    Max   Units
ELECTRICAL CHARACTERISTICS over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Supply Voltage
V
CC
Operation within specification,
T
j
 < 165癈
4.5    5.0
5.5    V
Supply Current
I
CC

8.2
10    mA
Reverse-Supply Current
I
RCC
V
CC
 = 16 V, T
A
= 25癈


16    mA
Power-On Time
1
t
PO
C
LOAD
= 10 nF, 90% full scale V
OUT


300    約
Chopping Frequency
f
C

200
    kHz
Internal Bandwidth
BW
A1373
Small signal -3 dB

2.5
    kHz
A1374

20
    kHz
OUTPUT CHARACTERISTICS over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Noise
2,3
V
N
A1373
peak-to-peak, C
LOAD
> 1 nF,
2.5 mV/G

6
16    mV
A1374

14
26    mV
Output Capacitance Load
C
LOAD
VOUT pin to GND pin


10    nF
Output Resistive Load
R
LOAD
4700    

?/DIV>
Phase Shift
?/DIV>
A1373 Magnetic signal freq. = 100 Hz   
3
    (?
A1374 Magnetic signal freq. = 1000 Hz   
3
    (?
Output Voltage
V
OUT(Sat)HIGH
I
OUTSOURCE
 = 1.2 mA,
B(kG) > (V
CC
V
OUT(Q)
) / Sens (mV/G)
4.65    4.7

V
V
OUT(Sat)LOW
I
OUTSINK
 = 1.2 mA,
B(kG) < V
OUT(Q)
/ Sens (mV/G)

0.2    0.25    V
Output Resistance
R
OUT

1.5

?/DIV>
MAGNETIC CHARACTERISTICS
Magnetic Slew Rate
SLR    V / ms / Sens

20

G/約
PRE-PROGRAMMING TARGET (Prior to coarse and fine trim) over operating temperature range, V
CC
= 5.0 V, unless
otherwise noted
Pre-Programming Quiescent
Output Voltage
V
OUT(Q)PRE
B = 0 G, T
A
= 25癈
1.62    1.80    1.98    V
Pre-Programming Sensitivity
Sens
PRE
T
A
= 25癈
1.05    1.31    1.75   mV/G
Pre-Programming Sensitivity
Temperature Coefficient
TC
PRE
T
A
relative to 25癈
0.016   0.05    0.104  %/癈
INITIAL COARSE PROGRAMMING over operating temperature range, V
CC
= 5.0 V, unless otherwise noted
Initial Coarse Quiescent Output
Voltage
V
OUT(Q)INITLOW
T
A
= 25癈

0.55

V
V
OUT(Q)INITMID
Reference V
OUT(Q)PRE

-

V
V
OUT(Q)INITHIGH
T
A
= 25癈

3.25

V
Initial Coarse Sensitivity
Sens
INITLOW
Reference Sens
PRE


   mV/G
Sens
INITMID
T
A
= 25癈

2.8
   mV/G
Sens
INITHIGH
T
A
= 25癈

5.5
   mV/G
CHARACTERISTIC PARAMETERS 
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