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
Continued on the next page...
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