OPERATING CHARACTERISTICS (continued) Valid over full operating temperature range, T
A
, V
CC
= 4.5 to 18 V,
C
BYPASS
= 0.1 糉, unless otherwise noted
Characteristics
Symbol
Test Conditions
Min. Typ. Max. Unit
Continued on the next page&
Sensitivity Programming
Initial Sensitivity
Sens
init
T
A
= 25癈
Sens
PRE
(% D)/G
Guaranteed Sensitivity Range
Sens
LOW
T
A
= 25癈
45
75 (m% D)/G
Sensitivity Programming Bits
8
bit
Average Sensitivity Step Size
8,9
Step
SENS(low)
T
A
= 25癈
150 300 450 (? D)/G
Sensitivity Programming Resolution
10
Err
PGSENS
T
A
= 25癈
Step
SENS
??. 5
(? D)/G
Carrier Frequency Programming
Initial Carrier Frequency
f
PWMinit
T
A
= 25癈
f
PWMPRE
Hz
Carrier Frequency Programming Range f
PWM
T
A
= 25癈
1.8 2
2.2 kHz
Carrier Frequency Programming Bits
4
bit
Average Carrier Frequency Step Size
8,9
Step
fPWM
T
A
= 25癈
90 114 140 Hz
Carrier Frequency Programming
Resolution
10
Err
PGfPWM
T
A
= 25癈
Step
fPWM
??. 5
Hz
Calibration Test Mode
Calibration Test Mode Duration
3
t
CAL
f
PWM
= 2 kHz
45 50 55
ms
Output Duty Cycle During Calibration
Mode
3
D
CAL
T
A
= 25癈
49 50 51 % D
Lock Bit Programming
Overall Programming Lock Bit
LOCK
1
bit
Factory Programmed Sensitivity Temperature Coefficient And Drift Characteristics
Sensitivity Temperature Coefficient
11
Sens
TC
T
A
= 150癈
0.03 %/癈
Sensitivity Drift Through Temperature
Range
12
擲ens
TC
T
A
= 150癈
< ?
%
Sensitivity Drift Due to Package
Hysteresis
2
擲ens
PKG
T
A
= 150癈, after temperature cycling
< ?
%
Factory Programmed Duty Cycle Drift
Duty Cycle Temperature Coefficient
11
D
TC
T
A
= 150癈
0
(% D)/癈
Quiescent Duty Cycle Drift Through
Temperature Range
擠
(Q)
Sens = Sens
PRE
, T
A
= 150癈
< ?.35
% D
High Precision Linear Hall-Effect Sensor IC
With an Open Drain Pulse Width Modulated Output
A1356
4
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
发布紧急采购，3分钟左右您将得到回复。
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