參數(shù)資料
型號(hào)： A1354KKTTN-T
元件分類： 磁阻傳感器
英文描述： MAGNETIC FIELD SENSOR-HALL EFFECT, RECTANGULAR, THROUGH HOLE MOUNT
封裝： LEAD FREE, PLASTIC, SIP-4
文件頁(yè)數(shù)： 3/22頁(yè)
文件大?。?/td> 531K
代理商： A1354KKTTN-T
Linearity Error is calculated separately for the positive
(LinERRPOS) and negative (LinERRNEG) applied magnetic fields.
Linearity error (%) is measured and defined as:
=
×
% ,
–
LinERRPOS
D(+B) – D(Q)
–
D(+B) D(Q)
=
×
% ,
–
LinERRNEG
D(–B) – D(Q)
–
D(–B) D(Q)
(10)
where:
|D(Bx) – D(Q)|
Bx
SensBx =
.
(11)
Then:
LinERR = max(LinERRPOS , LinERRNEG ) .
(12)
Note that unipolar devices only have positive linearity error
(LINERRPOS).
Symmetry Sensitivity Error The magnetic sensitivity of an
A1354 device is constant for any two applied magnetic fields of
equal magnitude and opposite polarities. Symmetry error,
SymERR (%), is measured and defined as:
=
×
% ,
–
SymERR
D(Q) – D(–B)
–
D(+B) D(Q)
(13)
where SensBx is as defined in equation 11, and BPOS and BNEG
are positive and negative magnetic fields such that |BPOS| =
|BNEG|. Note that the symmetry error specification is only valid
for bipolar devices.
Jitter The duty cycle of the PWM output may vary slightly over
time despite the presence of a constant applied magnetic field and
a constant carrier frequency for the PWM signal. This phenom-
enon is known as jitter, JitterPWM (%), and is defined as:
DBmax – DBmin
2
±
JitterPWM =
,
(14)
where DBmax and DBmin are the maximum and minimum duty
cycles measured the over 1000 PWM clock periods with a con-
stant applied magnetic field.
Resolution The ability to derive the value of the applied mag-
netic field from the device output is affected by jitter. The resolu-
tion of the magnetic field, RESPWM (G), is defined as:
JitterPWM
Sens
RESPWM =
.
(15)
High Precision 2-Wire Linear Hall Effect Sensor IC
with Pulse Width Modulated Output
A1354
11
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
相關(guān)PDF資料
PDF描述
A1382ELHLT-T MAGNETIC FIELD SENSOR-HALL EFFECT, 4.35-4.65V, RECTANGULAR, SURFACE MOUNT
A1381LLHLT-T MAGNETIC FIELD SENSOR-HALL EFFECT, 4.35-4.65V, RECTANGULAR, SURFACE MOUNT
A1384LUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, 4.35-4.65V, RECTANGULAR, THROUGH HOLE MOUNT
A1383EUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, 4.35-4.65V, RECTANGULAR, THROUGH HOLE MOUNT
A1382EUA-T MAGNETIC FIELD SENSOR-HALL EFFECT, 4.35-4.65V, RECTANGULAR, THROUGH HOLE MOUNT
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