MLX90215LVA Melexis Inc, MLX90215LVA Datasheet - Page 4

• Manufacturer Part Number: MLX90215LVA
• Description: IC SENSOR PROG LINEAR HALL 4SIP
• Manufacturer: Melexis Inc
• Type: Linear - Programmabler

Specifications of MLX90215LVA

• Sensing Range: Unlimited
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 6.5mA
• Current - Output (max): 2mA
• Output Type: Analog, Ratiometric
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 4-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Temperature Compensation
Temperature compensation (TC) is defined as the
change in sensitivity over temperature. Expressed in
(Parts Per Million per Degree Celcius) ppm/
Sens
Sens
Sens
3901090215
Rev 007
TC
TC Code
T1
T2
25
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
Table 3 - Temperature Compensation
= Initial Sensitivity measured at 25
= Sensitivity measured at Temperature 1 (T1)
= Sensitivity measured at Temperature 2 (T2)
Sens
Sens
T
1025
1125
1200
1275
1325
1425
1475
1500
1550
1600
1675
1750
1825
1900
1950
-700
-625
-525
-450
-350
-275
-200
-100
1
125
225
300
375
450
525
600
675
975
Min
Sens
25
Typical
T
1300
1375
1470
1550
1650
1725
1800
1900
2000
2100
2200
2275
2375
2450
2550
2650
-550
-450
-375
-300
-200
-125
275
350
425
525
600
675
775
850
2
-50
25
T
1
1
T
1025
1550
1650
1750
1825
1950
2025
2125
2200
2425
2525
2625
2700
2825
2925
3025
3125
-350
-275
-175
-100
Max
125
225
425
525
600
700
775
850
950
-25
50
2
o
C
10
o
C.
6
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
ppm/
Units
ppm
o
C
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
Page 4
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
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/
The MLX90215 can be programmed with a TC of 300
ppm/
improve linearity in the application 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 first
line brand showing “215DB”
Special Note
The MLX90215 programmed with a zero TC code
(default) has a typical TC value between the range of –
300 to –600 ppm/
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.
Previous revisions of the MLX90215 with second line
brand of “15AXX” or “15DXX” should refer to factory
for TC code maps.
Diagnostic Characteristics
Condition
V
V
V
V
V
V
> 10 K Ohms
V
> 4.7 K Ohms
V
OUT
OUT
OUT
OUT
SS
SS
DD
DD
open with pull up load
open with pull down load
open with pull up load
open with pull down load
o
Shorted to V
Shorted to V
open with pull up load
open with pull down load
C to counteract the TC of the magnet and greatly
Linear Hall Effect Sensor
Precision Programmable
DD
SS
o
C. This means sensitivity will
Output Level
V
V
V
V
V
V
or 94% V
V
or 3% V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
= V
= V
= V
= V
= V
= V
= V
= V
DD
DD
SS
DD
SS
DD
DD
SS
SS
DD
9/09/03
the
o
C.