A1351
High Precision Linear Hall Effect Sensor IC
with a Push/Pull, Pulse Width Modulated Output
10
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Symmetry Sensitivity Error The magnetic sensitivity of an
A1351 device is constant for any two applied magnetic fields of
equal magnitude and opposite polarities.
Symmetry error, Sym
ERR
(%), is measured and defined as:
Sens
BPOS
Sens
BNEG
1
Sym
ERR
=
?SPAN class="pst A1351LKTTN-T_2172462_8">
100%
,
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
(13)
where Sens
Bx
is as defined in equation 4, and B
POS
and B
NEG
are
positive and negative magnetic fields such that |B
POS
| = |B
NEG
|.
Note that the symmetry error specification is only valid for bipolar
devices.
Duty Cycle 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 phenomenon is known as jitter, and is defined as:
%D
B
(max) %D
B
(min)
2
J
D
= ?/DIV>
,
(14)
where %D
B
(max) and %D
B
(min) are the maximum and mini-
mum duty cycles measured the over 1000 PWM clock periods
with a constant applied magnetic field. J
D
is given in %D (see
figure below).
Duty Cycle Resolution The ability to know the value of the
applied magnetic field from the device output is affected by jitter.
The resolution of the magnetic field, in Gauss (G), is defined as:
J
DC
Sens
RES
=
.
(15)
Jitter is instability or small rapid irregularity about a specific data position in
a periodic electrical signal waveform from cycle to cycle. In this figure, the
A1351 PWM Output jitter is ?.025% D at 25癈, Sens = 0.095% D/G.
t
PERIOD
盝itter
相關代理商/技術參數 |
參數描述 |
A1352-035 |
制造商:AVX Corporation 功能描述: |
A1352-037 |
制造商:AVX Corporation 功能描述: |
A13532-43N |
制造商:Harris Corporation 功能描述: |
A1354 |
制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:High Precision 2-Wire Linear Hall Effect Sensor IC with Pulse Width Modulated Output |
A13546-000 |
制造商:TE Connectivity 功能描述:VARISTOR 680V 20MM RADIAL 制造商:TE Connectivity 功能描述:VARISTOR 680V 10KA DISC 20MM 制造商:TE CONNECTIVITY RAYCHEM-POLYSWITCH 功能描述:Var MOV 420VAC 560VDC 10000A 680V Thru-Hole Bulk |
主站蜘蛛池模板:
金华市|
镇赉县|
镶黄旗|
临湘市|
开平市|
巴里|
三穗县|
沽源县|
张家口市|
额尔古纳市|
南城县|
蓬安县|
大理市|
鲁甸县|
积石山|
通渭县|
龙江县|
雅安市|
巴中市|
达拉特旗|
高平市|
乌兰察布市|
濮阳市|
绥德县|
介休市|
东安县|
安远县|
察隅县|
临武县|
冷水江市|
达州市|
望奎县|
慈利县|
乌拉特后旗|
大丰市|
商河县|
乾安县|
浪卡子县|
化州市|
长顺县|
紫金县|