MLX90621 datasheet(19/44 Pages) MELEXIS

19 / 44 page

MLX90621

16x4 IR array

Datasheet

39001090621

Page 19 of 44

Datasheet IR16x4

Rev 3.0

15 September 2016

ŒFP

6M|∗…ndZV…nd[

6¯g‰†™žt∗6jmnopqrscts8u:v=

ŒGZ, ŒR[,ŒFPZ, ŒFP[, ∆Œ(J,•),ŒR‰†™žt and∆Œ••/°- arestored in theEEPROM asunsigned values

Calculating

±²³

7.3.3.1

1•N

_‰v_bb

6(´‰_‰†™žtkµ)

, stored in EEPRPOM at addresses 0x9E as two’s complement value

All parameters necessary to calculate To are stored into EEPROM at following addresses:

EEPROM

address

Cell name

Stored as

Parameter

0x00…0x3F

∆ J

unsigned

IR pixel individual offset delta coefficient

0x40…0x7F

J(J,•)

2’s complement

Individual Ta dependence (slope)

of IR pixels offset

0x80…0xBF

∆Œ(J,•)

unsigned

Individual sensitivity coefficient

0xC0

Ks_scale

unsigned

[7:4] – NA

[3:0] – Ks_scale - 8

0xC4

1•N_OO

2’s complement

Sensitivity To dependence (slope)

0xD0

•GŽŽGH[

2’s complement

IR pixel common offset coefficient

0xD1

•GŽŽGHZ

0xD3

FP[

2’s complement

Compensation pixel individual offset coefficient

0xD4

FPZ

0xD5

2’s complement

Individual Ta dependence (slope)

of the compensation pixel offset

0xD6

ŒFP[

unsigned

Sensitivity coefficient of the compensation pixel

0xD7

ŒFPZ

0xD8

2’s complement

Thermal gradient coefficient

0xD9

∆ J‰†™žt, J‰†™žt

unsigned

[7:4] – Scaling coeff for the IR pixels offset [3:0] –

Scaling coeff of the IR pixels offset Ta dependence

0xE0

ŒR[

unsigned

Common sensitivity coefficient of IR pixels

0xE1

ŒRZ

0xE2

ŒR‰†™žt

unsigned

Scaling coefficient for common sensitivity

0xE3

∆Œ••/°-

unsigned

Scaling coefficient for individual sensitivity

0xE4

¤.

unsigned

Emissivity

0xE5

¤:

0xE6

1 .

2’s complement

KsTa (fixed scale coefficient = 20)

0xE7

1 :

Table 8 EEPROM parameters for To calculations

MLX90621 Datasheet(PDF) 19 Page - Melexis Microelectronic Systems

MLX90621 Datasheet(HTML) 19 Page - Melexis Microelectronic Systems

Html Pages

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 32 33 34 35 36 37 38 39 40 41 42 43 44

Datasheet Download

Link URL