MLX90621 datasheet(21/44 Pages) MELEXIS

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MLX90621

16x4 IR array

Datasheet

39001090621

Page 21 of 44

Datasheet IR16x4

Rev 3.0

15 September 2016

Reference routine for To computation:

Q(J,•)

x y€c(r,•)nefdb‚ƒ„`bi

…†o‡ˆ(r,•)∗(3E_‰v∗6UD.3M)V)h4 /_v

0 273.15,8° =

9ŠL(6,])eqq‰t˜no‡ˆtp‰™˜tš 9ŠL(6,]) 0› J(6,]) 4 J(6,]) ∗( / 0 /R)œ

J(6,])

z†o‡‡opV∆zr(a,µ)∗6∆„r‰†™žt

6(jmnopqrscts8u:v=)

•GŽŽGH

256 ∗ •GŽŽGHZ 4 •GŽŽGH[ 256 ∗255 4 138 65418 LSB decimal value

Sign check

65418 @ 32767 → •GŽŽGH 65418 0 65536 0118 LSB

∆ J 33 LSB

J(6,])

z†o‡‡opV∆zr(a,µ)∗6∆„r‰†™žt

6(jmnopqrscts8u:v=)

E33]VDD∗6g

6(jmj)

085 LSB

J(6,])

*r(a,µ)

6Ÿr‰†™žt∗6(jmnopqrscts8u:v=)

J(6,])_OO

188

Sign check

188 @ 127 → J(6,]) 188 0256 068

J(6,])

*r(a,µ)

6Ÿr‰†™žt∗6(jmnopqrscts8u:v=)

E|]

6·∗6(jmj) 00.53125

9ŠL(6,])eqq‰t˜no‡ˆtp‰™˜tš 439 0¬085 0 0.53125 ∗(36.18 025)- ≈ 529.939375 LSB

256 ∗ FPZ 4 FP[ 65437 , decimal value

Sign check

65437 @ 32768 → FP 65437 0 65536 099 LSB

znd

6(jmnopqrscts8u:v=)

Eww

6(jmj) 099

FP_OO

162

Sign check

162 @ 127 → FP 162 0256 094

*nd

6Ÿr‰†™žt∗6(jmnopqrscts8u:v=)

EwN

6·∗6(jmj) 00.734375

9ŠLFPeqq‰t˜no‡ˆtp‰™˜tš 9FP 0¬ FP 4 FP ∗( / 0 /R)- 0360 (099 0 0.734375 ∗(36.18 025))

9ŠLFPeqq‰t˜no‡ˆtp‰™˜tš ≈ 71.2103125 LSB

¡ OOPLQ( 0 18 24, decimal value

Sign check

24 X 128 → ¡ _•• ” 24

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