參數(shù)資料
型號(hào)： MLX90215LVA
廠商： Electronic Theatre Controls, Inc.
英文描述： Precision Programmable Linear Hall Effect Sensor
中文描述： 高精度可編程線性霍爾效應(yīng)傳感器
文件頁數(shù)： 4/9頁
文件大?。?/td> 294K
代理商： MLX90215LVA
*Patent Pending
MLX90215 Programmable Hall Effect Sensor Rev 4.3 7/6/01 Page 4
MLX 90215
Prec ision Programmable*
Linear Hall E ffec t S ensor
Programming the Temperature Compensation
The MLX90215 has a 5-bit (32 step) programmable
adjustment that changes it’s sensitivity drift over a
given temperature range. By adjusting the TC code
the sensitivity can be programmed to increase as
temperature increases to counteract the decrease in
magnetic flux most magnets display over temperature.
For example a SmCo (Samarium Cobalt) magnet has a
temperature coefficient of approximately –300 ppm/
o
C. The MLX90215 can be programmed with a TC of
300 ppm/
o
C to counteract the TC of the magnet and
greatly improve linearity over temperature.
Table 3
(left) illustrates the way the TC code affects
the sensitivity temperature drift. Also note in Table 3,
the overlap in TC codes. The numbers in the table
represent typical results and are for reference only.
For accurate results the TC code must be determined
experimentally. This Tc code map applies to
MLX90215’s with a second line brand showing
“15DXX”
Special Note
The MLX90215 programmed with a zero TC code
(default) has a typical TC value between the range of –
300 to –600 ppm/
o
C. This means sensitivity will
decrease slightly as temperature increases. The
slightly negative initial TC value allows the
MLX90215 to be accurately programmed up to 0 TC.
Almost all magnets have a naturally negative TC code.
The natural TC of a magnet added with the initial
negative TC value of the MLX90215 could degrade
linearity over a large temperature span. Using a TC
code of 6, 7, or 8 will give the MLX90215 a slightly
positive TC code.
Early revisions of the MLX90215 with second line
brand of “15AXX” should refer to factory for Tc code
TC Code
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Mn
-600
-535
-465
-390
-300
-235
-150
-85
125
125
210
285
450
535
600
680
1150
1230
1320
1405
1490
1575
1665
1750
2165
2340
2425
2500
2595
2680
2710
2775
Typical
-450
-385
-315
-240
-150
-85
0
65
275
360
435
515
600
685
750
830
1300
1380
1470
1555
1640
1725
1815
1900
2365
2490
2575
2650
2745
2830
2910
2975
Max
-300
-235
-165
-90
0
65
150
215
425
510
585
665
750
835
900
980
1450
1530
1620
1705
1790
1875
1965
2950
2565
2640
2725
2800
2895
2980
3110
3175
Units
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
ppm/
o
C
Table 3 - Temperature Compensation
Condition
Output Level
V
OUT
Shorted to V
DD
V
OUT
= V
DD
V
OUT
Shorted to V
SS
V
OUT
= V
SS
V
OUT
open with pull up load
V
OUT
= V
DD
V
OUT
open with pull down load
V
OUT
= V
SS
V
SS
open with pull up load
V
OUT
= V
DD
V
SS
open with pull down load
> 10 K Ohms
V
OUT
= V
DD
or 94% V
DD
V
DD
open with pull up load
> 4.7 K Ohms
V
OUT
= V
SS
or 3% V
DD
V
DD
open with pull down load
V
OUT
= V
SS
Temperature Compensation
Temperature compensation (TC) is defined as the
change in sensitivity over temperature. Expressed in
(Parts Per Million per Degree Celcius) ppm/
o
C.
Sens
Sens
TC
=
Sens
T1
= Sensitivity measured at Temperature 1 (T1)
Sens
T2
= Sensitivity measured at Temperature 2 (T2)
Sens
25
= Initial Sensitivity measured at 25
o
C
C
ppm
o
T
T
Sens
T
T
6
25
2
1
10
2
1
1
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參數(shù)描述
MLX90215LVA-AAA-111-BA 制造商:Melexis Semiconductors 功能描述:IC HALL EFFECT SENSOR PREC 4SIP
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MLX90215LVA-CC03 功能描述:IC SENSOR LIN HALL 20MV/MT 2.5V RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR
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